| 30 de ani de la inaugurarea oficială a sistemului hidroenergetic și de navigație Porțile de Fier I by Radu Voinea, Academia Română - 2003 - 299 pages |
| A bill to provide for outlet modifications to Folsom Dam, California, reconstruction of Northfork American River Cofferdam, transfer of Auburn Dam, and for other purposes by United States. Congress. House. Committee on Resources - 1998 - 10 pages |
| A brief outline of the economic features of hydraulic mining by Sacramento Valley Anti-Debris Association, California. Legislature. Water Conservation Committee - 1928 - 18 pages |
| A dual interpretation of a linear reservoir model by Chia-Ming Liu - 1975 - 38 pages |
| A History of Dams by Norman Alfred Fisher Smith - 1972 - 279 pages |
| A history of dams by Norman Alfred Fisher Smith - 1971 - 279 pages |
| A model study of the proposed dam at Muscoda on the Wisconsin River by Michael Dorl - 1963 - 142 pages |
| A Practical Companion to Reservoir Stimulation by Michael J. Economides - 1992 - 222 pages |
| A Private owner's perspective of dam safety by Pacific Gas and Electric Company, United States Committee on Large Dams - 1985 - 185 pages |
| A reclamation project by Salt River Project, United States Committee on Large Dams - 1988 - 292 pages |
| A review of earthquake resistant design of dams by International Commission on Large Dams. Committee on Earthquakes - 1975 - 105 pages |
| A River Lost by Blaine Harden - 1997 - 271 pages |
| A River Lost by Blaine Harden - 1996 - 271 pages |
| A study of early gully-control structures in the Colorado front range by Burchard H. Heede, Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.), United States. Forest Service - 1960 - 42 pages |
| A survey of public attitudes in Massachusetts toward the recreational use of a drinking water reservoir (Quabbin Reservoir) by Walter H. Bumgardner, Lawrence R. Klar - 1979 - 46 pages |
| A Tale of Two Dams by Hal Wiggins - 2007 - 113 pages |
| A three dimensional approach to the exchange of heat and water vapor between a large water body and the atmosphere by Gour-Tsyh Yeh, Wilfried Burtsaert - 1971 - 34 pages |
| A Watershed in Global Governance? by Navroz K. Dubash - 2001 - 136 pages |
| Abundance is not enough by Paul E. Little - 2003 - 23 pages |
| Additional authorization of appropriations for the Reclamation Safety of Dams Act of 1978 by United States. Congress. House. Committee on Resources - 2004 - 6 pages |
| Administrative problems in the preliminary phases of the planning and construction of the Hoover dam by William James Bruce - 1942 - 512 pages |
| Advances in Core Evaluation III by Paul F. Worthington - 1993 - 496 pages |
| Aguas turbias by Jorge Moraga R. - 2001 - 141 pages |
| Air slots for flow aeration by Peter Volkart, André Chervet - 1983 - 71 pages |
| Algas planctonicas em reservatorios de hidreletricas brasilieras - 2009 - 155 pages |
| Alqueva by Antunes da Silva - 1982 - 102 pages |
| Alton Locks and Dam by Craig Roach, United States. Congressional Budget Office - 1976 - 51 pages |
| Alton locks and dam, a review of the evidence by Craig Roach, United States. Congressional Budget Office - 1976 - 51 pages |
| America's Fight Over Water by Kevin Wehr - 2004 - 272 pages |
| America's Fight Over Water by Kevin Wehr - 2004 - 272 pages |
| America's greatest dam, Muscle Shoals, Alabama by William Benjamin West - 1925 |
| An experimental study of the stresses in masonry dams by Karl Pearson, A. F. Campbell Pollard, C. W. Wheen, L. F. Richardson - 1907 - 44 pages |
| Analysis and design of a prestressed circular reservoir by Pravinchandra Vora - 1961 - 152 pages |
| Analysis of coal refuse dam failure by Wahler (W.A.) & Associates, United States. Bureau of Mines - 1973 |
| Analysis of coal refuse dam failure by Wahler (W.A.) & Associates, United States. Bureau of Mines - 1973 |
| Ancient dams of Iran by Kumi(tah-i Milli(-i Sad+£ha(-yi Buzurg-i I(ra(n - 29 pages |
| Animas-La Plata project (proposed) by United States. Bureau of Reclamation. Upper Colorado Region - 1983 - 4 pages |
| Applied Hydraulic Transients by M Popescu Popescu, Dumitru Arsenie, Paul Vlase - 2003 - 329 pages |
| Applied Hydraulic Transients by M Popescu Popescu, Dumitru Arsenie, Paul Vlase - 2003 - 329 pages |
| Applied reservoir engineering by Charles Robert Smith, G. W. Tracy, R. Lance Farrar - 1992 - 456 pages |
| Applied reservoir engineering by Charles Robert Smith, G. W. Tracy, R. Lance Farrar - 1992 - 456 pages |
| Applied reservoir engineering by Charles Robert Smith, G. W. Tracy, R. Lance Farrar - 1992 - 386 pages |
| Applied reservoir engineering by Charles Robert Smith, G. W. Tracy, R. Lance Farrar - 1992 - 386 pages |
| Applied reservoir engineering by Charles Robert Smith (Ph. D.), G. W. Tracy, R. Lance Farrar - 1992 |
| Aprovechamiento integral del agua en la Rambla de Nogogalte by José María Gómez Espín - 2004 - 190 pages |
| Arbuckle project by United States. Bureau of Reclamation. Southwest Region - 1983 - 6 pages |
| Arch dam investigation by Engineering Foundation (U.S.). Committee on Arch Dam Investigation, American Society of Civil Engineers - 1933 |
| Arch dam investigation by Engineering Foundation (U.S.). Committee on Arch Dam Investigation, American Society of Civil Engineers - 1933 |
| Arch dam investigation by Engineering Foundation (U.S.). Committee on Arch Dam Investigation, American Society of Civil Engineers - 1933 |
| Arch dam investigation by Engineering Foundation (U.S.). Committee on Arch Dam Investigation, American Society of Civil Engineers - 1928 - 285 pages |
| Arch dams by T. L. Dennis, Institution of Civil Engineers (Great Britain) - 1968 - 167 pages |
| Army Corps of Engineers by United States. General Accounting Office - 2000 - 37 pages |
| Around Boulder City by Cheryl Ferrence, Boulder City Museum and Historical Association - 2008 - 127 pages |
| Arthur V. Watkins Dam Enlargement Act of 2005 by United States. Congress. House. Committee on Resources - 2005 - 4 pages |
| As long as the waters flow: Kerr Dam, power on the Flathead by Confederated Salish and Kootenai Tribes of the Flathead Reservation, Dixon, Mont - 1962 - 62 pages |
| Assessing natural and human alterations to coastal sediment supply in California and the impacts on regional beach sustainability by Cope M. Willis - 2002 - 266 pages |
| Assessment of Effects of Altered Stream Flow Characteristics on Fish and Wildlife by Charles R. Hazel - 1976 - 48 pages |
| Assessment of effects of altered stream flow characteristics on fish and wildlife by Western Energy and Land Use Team, Biological Services Program (U.S.), Western Energy and Land Use Team. Western Water Allocation Project - 1976 |
| Assessment of effects of altered stream flow characteristics on fish and wildlife by Western Energy and Land Use Team, Biological Services Program (U.S.), Western Energy and Land Use Team. Western Water Allocation Project - 1976 |
| Assessment of effects of altered stream flow characteristics on fish and wildlife by Western Energy and Land Use Team, Biological Services Program (U.S.), Western Energy and Land Use Team. Western Water Allocation Project - 1976 |
| Aswan High Dam - 1997 - 65 pages |
| Authorization for construction of dams on the Potomac River by United States. Congress. House. Committee on Public Works. Subcommittee on Rivers and Harbors - 1956 - 20 pages |
| Authorizing the construction of temperature control devices at Folsom Dam in California by United States. Congress. Senate. Committee on Energy and Natural Resources - 1998 - 3 pages |
| Baker project by United States. Bureau of Reclamation. Pacific Northwest Region - 1982 - 6 pages |
| Balancing fisheries management and water uses for impounded river systems by Micheal Shawn Allen, Steve M. Sammons, Michael John Maceina, American Fisheries Society. Southern Division. Reservoir Committee - 2008 - 697 pages |
| Barrages by Claude Marché - 2008 - 405 pages |
| Barrages by Claude Marché - 2004 - 388 pages |
| Barrages and link canals of the Indus Basin Project, completed and in operation, November 1967: Sidhnai Barrage, Mailsi Siphon, Qadirabad Barrage, Trimmu-Sidhnai link, Sidhnai-Mailsi link, Mailsi-Bahawal link, Qadirabad-Balloki link by West Pakistan Water and Power Development Authority - 1967 - 67 pages |
| Bath County Hydroelectric Pumped Storage Project by James M. Hagood, United States Committee on Large Dams - 1983 - 216 pages |
| Battling Drought by Scientific American Editors - 2012 - 100 pages |
| Belt conveyor for rolled earth fill dams by William Bayer Strandberg - 1940 - 62 pages |
| Benefits and concerns about dams by International Commission on Large Dams. German Committee on Large Dams - 2001 - 100 pages |
| Bericht über die von der Deutschen Kolonialgesellschaft dem Kolonial-Wirtschaftlichen Komitee übertragene Fischfluss-Expedition by Alexander Kuhn, Deutsche Kolonialgesellschaft - 1904 - 156 pages |
| Bhakra-Nangal Project by R. Rangachari, Third World Centre for Water Management, Centre for Policy Research (New Delhi, India), Nihon Zaidan - 2006 - 256 pages |
| Bibliographie choisie sur les grands réservoirs africains by E. O. Ita, T. Petr - 1983 - 53 pages |
| Bibliographie choisie sur les grands réservoirs africains by E. O. Ita, T. Petr - 1983 - 53 pages |
| Bibliographie Choisie Sur Les Grands Réservoirs Africains by E. O. Ita, Tomi Petr - 1983 - 53 pages |
| Bibliography on performance of dams during earthquakes by Philip Gregory, United States Committee on Large Dams. Earthquake Committee - 1984 - 27 pages |
| Big dams, displaced people by Enakshi Ganguly Thukral - 1992 - 199 pages |
| Boise diversion dam by United States. Bureau of Reclamation - 1978 - 9 pages |
| Boise project by United States. Bureau of Reclamation. Pacific Northwest Region - 1982 - 18 pages |
| Bonneville Lock & Dam in celebration of our 50, fiftieth year by United States. Army. Corps of Engineers. Portland District - 1987 - 12 pages |
| Bonneville Lock & Dam in celebration of our 50, fiftieth year by United States. Army. Corps of Engineers. Portland District - 1987 - 12 pages |
| Boulder Canyon project by United States. Bureau of Reclamation - 1939 - 402 pages |
| Boulder Canyon project by United States. Bureau of Reclamation - 1938 |
| Boulder Canyon project by United States. Bureau of Reclamation - 1938 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1949 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1940 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1940 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1939 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1939 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1938 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1938 |
| Boulder Canyon project, final reports by United States. Bureau of Reclamation - 1938 |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Boulder Canyon Project: Introductory by United States. Bureau of Reclamation |
| Bridge Canyon project by United States. Congress. Senate. Committee on Interior and Insular Affairs - 1948 - 569 pages |
| Bridge Canyon project by United States. Congress. Senate. Committee on Interior and Insular Affairs - 1948 - 569 pages |
| Brief instructions for the design and construction of small dams for emergency conservation work in North Dakota by United States. Bureau of Agricultural Engineering, L. C. Tschudy, John G. Sutton - 1934 - 44 pages |
| Buford-Trenton project by United States. Bureau of Reclamation. Upper Missouri Regional Office - 1982 - 2 pages |
| Building the Ultimate Dam by Donald Conrad Jackson - 2005 - 336 pages |
| Built for the people of the United States by Marian Moffett, Lawrence Wodehouse, Ewing Gallery of Art and Architecture - 1983 - 65 pages |
| Bulletin spéciale - 1969 - 123 pages |
| Bureau of Reclamation Plan for the 21st Century by United States. Congress. Senate. Committee on Energy and Natural Resources - 2006 - 74 pages |
| Bureau of Reclamation plan for the 21st century by United States. Congress. Senate. Committee on Energy and Natural Resources - 2006 - 74 pages |
| Bureau of Reclamation plan for the 21st century by United States. Congress. Senate. Committee on Energy and Natural Resources - 2006 - 74 pages |
| Burt Dam feasibility study by Stephen F. Burke, John J. Zdeb, New York State Energy Research and Development Authority, General Electric Company - 1980 |
| Cabra Corral by Eugenio E. Taruselli, Ercilia Navamuel, Ricardo N. Alonso - 2000 - 144 pages |
| Cachuma project by United States. Bureau of Reclamation. Mid-Pacific Regional Office - 1982 - 6 pages |
| Calculation of the evaporation from reservoirs by P. P. Kokoulin, G. L. I͡Atsentkovskiĭ - 1963 - 16 pages |
| Canalization and river regulation by United States. Engineer School - 1951 |
| Canyon Ferry Dam and Powerplant by United States. Bureau of Reclamation - 1958 - 325 pages |
| Castle on the rock, 1881-1985 by Mary Yeater Rathbun, United States. Army. Corps of Engineers. Little Rock District - 1990 - 192 pages |
| Castle on the rock, 1881-1985 by Mary Yeater Rathbun, United States. Army. Corps of Engineers. Little Rock District - 1990 - 192 pages |
| Castle on the rock, 1881-1985 by Mary Yeater Rathbun, United States. Army. Corps of Engineers. Little Rock District - 1990 - 192 pages |
| Central Arizona project (under construction) by United States. Bureau of Reclamation. Lower Colorado Region - 1983 - 10 pages |
| Central Valley project, Allen Camp unit, Pit River division, (proposed) by United States. Bureau of Reclamation. Mid-Pacific Regional Office - 1983 - 4 pages |
| Central Valley project, Friant Division by United States. Bureau of Reclamation. Mid-Pacific Regional Office - 1983 - 4 pages |
| Central Valley project, Sacramento canals unit, Sacramento River division by United States. Bureau of Reclamation. Mid-Pacific Regional Office - 1983 - 6 pages |
| Central Valley project, San Felipe division by United States. Bureau of Reclamation. Mid-Pacific Regional Office - 1983 - 4 pages |
| Channel dynamics above gully-control structures by David A. Woolhiser - 1962 - 204 pages |
| Channel-bed elevation changes downstream from large reservoirs in Kansas by Kyle E. Juracek, Kansas. Dept. of Transportation, Geological Survey (U.S.) - 2001 - 24 pages |
| Chemical, biological, and physical data for the major lakes and reservoirs in Louisiana by William J. Shampine, Geological Survey (U.S.). Water Resources Division. Louisiana District - 1971 - 98 pages |
| Chief Joseph Dam project by United States. Bureau of Reclamation. Pacific Northwest Region - 1983 - 8 pages |
| Chiloquin Dam Fish Passage Feasibility Study Act of 2001 by United States. Congress. House. Committee on Resources - 2001 - 3 pages |
| China's environmental crisis by Gørild Heggelund - 1993 - 160 pages |
| Clarence Cannon Dam and Reservoir by United States. General Accounting Office, United States. Army. Corps of Engineers - 1977 - 23 pages |
| Clarence Cannon Dam and Reservoir by United States. General Accounting Office, United States. Army. Corps of Engineers - 1977 - 23 pages |
| Closure of the channel of the Angara River in the area of the Bratsk hydroelectric plant by S. K. Akhrap - 1960 - 20 pages |
| Code of practice for the design of hydraulic structures by Leningrad (R.S.F.S.R.) Vsesoi︠u︡znyĭ nauchno-issledovatel'skiĭ institut gidrotekhniki, Roman Romanovich Chugaev, Soviet Union. Ministerstvo ėlektrostant︠s︡iĭ - 1958 - 91 pages |
| Collbran project by United States. Bureau of Reclamation. Upper Colorado Region - 1982 - 10 pages |
| Colorado Lakes & Reservoirs by Outdoor Books & Maps - 2008 - 216 pages |
| Colorado River basin project, (general overview) by United States. Bureau of Reclamation. Lower Colorado Region, United States. Bureau of Reclamation. Upper Colorado Region - 1983 - 4 pages |
| Columbia basin project by United States. Bureau of Reclamation. Pacific Northwest Region - 1983 - 24 pages |
| Colville tribes, Grand Coulee settlement by United States. Congress. House. Committee on Natural Resources. Subcommittee on Oversight and Investigations - 1994 - 100 pages |
| Colville tribes, Grand Coulee settlement by United States. Congress. House. Committee on Natural Resources. Subcommittee on Oversight and Investigations - 1994 - 100 pages |
| Colville tribes, Grand Coulee settlement by United States. Congress. House. Committee on Natural Resources. Subcommittee on Oversight and Investigations - 1994 - 100 pages |
| Comparison of estimated probable maximum flood peaks with historic floods by Kenneth L. Bullard, Engineering and Research Center (U.S.). Hydrology Branch - 1986 - 165 pages |
| Completion and operation of the Bonneville project by United States. Congress. Senate. Committee on Commerce - 1937 |
| Completion of Grand Coulee Dam Left Powerhouse and foundation for pumping plant by United States. Bureau of Reclamation - 1937 - 161 pages |
| Comportement des grands barrages suisses by Schweizerisches Nationalkomitee für Grosse Talsperren - 1964 - 320 pages |
| Comprehensive report on reservoirs in Mississippi river basin by United States. Army. Corps of Engineers, United States. Board of Engineers for Rivers and Harbors - 1936 - 97 pages |
| Computational River Dynamics by Weiming Wu - 2008 - 494 pages |
| Computer-calculated Geometric Characteristics of Middle Mississippi River Side Channels: Procedures and results.- v. 2. Side-channel contour maps by Victor E. LaGarde, Samuel J. Winfrey, United States. Army. Corps of Engineers. St. Louis District - 1974 |
| Concrete performance at Pueblo Dam, Colorado by Larry G. Mogck, Edwin R. Dunstan, Engineering and Research Center (U.S.). Concrete and Structural Branch - 1982 - 38 pages |
| Confederated Tribes of the Colville Reservation, Nuece River project, and Colorado River Salinity Control Act by United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Water and Power, United States. Congress. Senate. Committee on Indian Affairs - 1995 - 43 pages |
| Confederated Tribes of the Colville Reservation, Nuece River project, and Colorado River Salinity Control Act by United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Water and Power, United States. Congress. Senate. Committee on Indian Affairs - 1995 - 43 pages |
| Confederated Tribes of the Colville Reservation, Nuece River project, and Colorado River Salinity Control Act by United States. Congress. Senate. Committee on Energy and Natural Resources. Subcommittee on Water and Power, United States. Congress. Senate. Committee on Indian Affairs - 1995 - 43 pages |
| Construction Control for Earth and Rockfill Dams - 1999 - 100 pages |
| Construction of dams and aircraft overflights in national park units by United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on National Parks and Recreation - 1987 - 370 pages |
| Construction of dams and aircraft overflights in national park units by United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on National Parks and Recreation - 1987 - 370 pages |
| Construction of linings for reservoirs, tanks, and pollution control facilities by William B. Kays - 1986 - 454 pages |
| Construction of linings for reservoirs, tanks, and pollution control facilities by William B. Kays - 1977 - 379 pages |
| Construction of Linings for Reservoirs, Tanks, and Pollution Control Facilities by William B. Kays - 1977 - 379 pages |
| Construction of linings for reservoirs, tanks, and pollution control facilities by William B. Kays - 1977 - 379 pages |
| Construction of masonry dams by Chester Wason Smith - 1915 - 279 pages |
| Construction of mill dams by J. Leffel & Co, Leffel, J., & Co - 1972 - 152 pages |
| Cougar Reservoir, South Fork, McKenzie River, Oregon by United States. Army. Corps of Engineers - 1964 - 100 pages |
| Cowan creek valley dam, Clinton county, Ohio by United States. Congress. Senate. Committee on Commerce - 1938 - 23 pages |
| Cowanesque operations manual by John E. McSparran, Donald R. Jackson, Susquehanna River Basin Commission - 1994 - 17 pages |
| Crooked River project, Oregon by United States. Bureau of Reclamation. Pacific Northwest Region - 1983 - 10 pages |
| Current United States practice for numerical analysis of dams by United States Committee on Large Dams. Committee on Methods of Numerical Analysis of Dams - 1985 - 104 pages |
| Dalton Gardens project by United States. Bureau of Reclamation. Pacific Northwest Region - 1983 - 4 pages |
| Dam by Trevor Turpin - 2008 - 256 pages |
| Dam Breach Modeling Technology by V.P. Singh - 1996 - 242 pages |
| Dam construction by the Chinese people by Zhongguo da ba wei yuan hui - 1979 - 236 pages |
| Dam foundation engineering by United States Committee on Large Dams, United States. Army. Corps of Engineers, Ebasco Services Incorporated - 1990 |
| Dam Foundation Grouting by Ken D. Weaver, Donald A. Bruce - 2007 - 473 pages |
| Dam Foundation Grouting by Ken D. Weaver, Donald A. Bruce - 2007 - 473 pages |
| Dam geology by Rupert Cavendish Skyring Walters - 1962 - 335 pages |
| Dam Maintenance and Rehabilitation by J. A. Llanos - 2003 - 974 pages |
| Dam removal by Laura Ost, Program on Energy, the Environment, and the Economy (Aspen Institute) - 2002 - 68 pages |
| Dam safety by L. Berga - 1998 - 1616 pages |
| Dam Safety Act of 2006 by United States. Congress. Senate. Committee on Environment and Public Works - 2006 - 9 pages |
| Dam Safety and Security Act of 2002 by United States. Congress. House. Committee on Transportation and Infrastructure - 2002 - 16 pages |
| Dam Safety and the Environment by Shawki M. Barghouti - 1990 - 174 pages |
| Dam(ned) conflicts in Thailand by David Murray - 1992 - 50 pages |
| Dam-Break Problems, Solutions and Case Studies by D. De Wrachien - 2009 - 334 pages |
| Dambusters by Max Arthur - 2010 - 352 pages |
| Damming the Delaware by Richard C. Albert - 2010 |
| Damming the Three Gorges by Margaret Barber, Gráinne Ryder - 1993 - 183 pages |
| Damming the Three Gorges by Gráinne Ryder, Probe International - 1990 - 135 pages |
| Damming the Three Gorges by Gráinne Ryder, Probe International - 1990 - 135 pages |
| Damned by the dam by Emma Ezeazu, Reuben Ziri, Community Action for Popular Participation (Nigeria), NYACHESA (Organization : Nigeria) - 1998 - 24 pages |
| Dams by Koushal Raj Saxena, V. M. Sharma - 2004 - 240 pages |
| Dams by Donald Conrad Jackson - 1997 - 364 pages |
| Dams & Rivers by Michael Collier, Robert H. Webb, John C. Schmidt - 1998 - 94 pages |
| Dams 2000 by British Dam Society. Conference, P. Tedd - 2000 - 438 pages |
| Dams and Appurtenant Hydraulic Structures by Lubomir Tančev - 2005 - 838 pages |
| Dams and appurtenant works maintenance, operations and safety guideline by United States. National Park Service. Engineering and Safety Services Division - 1983 |
| Dams and appurtenant works maintenance, operations and safety guideline by United States. National Park Service. Engineering and Safety Services Division - 1983 |