| El panamericanismo de Sarmiento by Alberto Palcos - 1941 - 33 pages |
| El paradencio, su patología y tratamiento by Francisco M. Pucci - 1941 - 697 pages |
| El Paraguay y la condonación de su deuda de guerra by Justo Oláran Chans - 1941 - 23 pages |
| El país de Cón (región andina) by Pedro Bazán - 1941 - 326 pages |
| El pensamiento político de Calvo Sotelo by Eugenio Vegas Latapie - 1941 - 229 pages |
| El pensamiento político y social de Martí discurso que leyó en la sesión solemne del Senado by Jorge Mañach - 1941 - 37 pages |
| El Pensamiento vivo de Saavedra Fajardo by Diego de Saavedra Fajardo - 1941 - 213 pages |
| El pensamiento vivo de Sarmiento by Domingo Faustino Sarmiento - 1941 - 245 pages |
| El pensamiento vivo de Sarmiento by Domingo Faustino Sarmiento - 1941 - 245 pages |
| El periodismo en Puerto Rico by Antonio Salvador Pedreira - 1941 - 470 pages |
| El periodismo en Puerto Rico by Antonio Salvador Pedreira - 1941 - 470 pages |
| El periodismo en Puerto Rico by Antonio Salvador Pedreira - 1941 - 470 pages |
| El periodismo y las leyes de imprenta by Telmo N. Vaca del Pozo - 1941 - 186 pages |
| El Perú en marcha by Antonello Gerbi - 1941 - 412 pages |
| El petroleo y la ley by Pedro Alejandro Gómez Naranjo - 1941 - 209 pages |
| El pintor Santiago Paramo by Miguel Aguilera, Santiago Páramo - 1941 - 160 pages |
| El plan federal del Dr. Francia by Efraím Cardozo - 1941 - 24 pages |
| El plátano by Tulio Ospina - 1941 - 7 pages |
| El poema del Cid by Cid - 1941 - 142 pages |
| El poema del Cid by Miguel Capella - 1941 - 93 pages |
| EL POEMA DEL CID by MIGUEL CAPELLA - 1941 |
| El poeta de Montevideo don Francisco Acuña de Figueroa by José Gervasio Antuña - 1941 |
| El porfirismo by José C. Valadés - 1941 |
| El porfirismo by José C. Valadés - 1941 |
| El pozo de la angustia by José Bergamín - 1941 - 197 pages |
| El precursor; o sea by Manuel Frontaura Argandoña - 1941 - 202 pages |
| El problema de alcoholismo en Tucumán ... by Manuel Andreozzi - 1941 - 340 pages |
| El problema indígena de México by Alfonso Fabila - 1941 - 43 pages |
| El problema social en Bolivia, condiciones de vida y de trabajo by Remberto Capriles Rico, Gastón Ardúz Eguía - 1941 - 172 pages |
| El procedimiento interamericano para consolidar la paz (análisis jurídico y compilación de los textos respectivos) by Hermann Meyer-Lindenberg, Universidad Nacional de Colombia - 1941 - 312 pages |
| El procedimiento interamericano para consolidar la paz (análisis jurídico y compilación de los textos respectivos) by Hermann Meyer-Lindenberg, Universidad Nacional de Colombia - 1941 - 312 pages |
| El procedimiento interamericano para consolidar la paz(análisis jurídico y compilación de los textos respectivos) by Hermann Meyer-Lindenberg - 1941 - 312 pages |
| El proceso de la independencia nacional by Juan E. Pivel Devoto - 1941 - 42 pages |
| El proceso Dreyfus by Bruno Weil - 1941 - 270 pages |
| El processo filosófico de Bergson y su bibliografía by Alfredo Coviello - 1941 - 117 pages |
| El processo filosófico de Bergson y su bibliografía by Alfredo Coviello - 1941 - 117 pages |
| El príncipe de los gauchos, Francisco Antonio Candioti, primer gobernador de Santa Fe by Jorge Newton - 1941 - 134 pages |
| El psicoanálisis desde el punto de vista médico-legal by Carlos Vaz Ferreira - 1941 - 209 pages |
| El puerto del Callao en la Tercera Feria Nacional by Callao. Cámara de Comerico - 1941 - 42 pages |
| El punto de partida de la filosofía by Enrique B. Pita, José Ignacio Cifuentes - 1941 - 93 pages |
| El Quijote de Avellaneda by Alonso Fernández de Avellaneda, Miguel de Cervantes Saavedra - 1941 |
| El Quijote de Avellaneda by Alonso Fernández de Avellaneda, Miguel de Cervantes Saavedra - 1941 |
| El rapto de las sabinas by Jorge Zalamea - 1941 - 148 pages |
| El rastreador by Alberto Larrán de Vere - 1941 - 154 pages |
| El Real Consulado de Buenos Aires durante las invasiones inglesas, 1806-1807 by Julio César González - 1941 - 55 pages |
| El Real Monasterio de las Huelgas by Guillermo Ávila y Díaz-Ubierna - 1941 - 47 pages |
| El reino de Quito by Oscar Efrén Reyes - 1941 |
| El reverendísimo Sr. Dr. Dn. Alejandro Mateus, apóstol de la acción social católica by Alfonso A. Jerves - 1941 - 33 pages |
| El Rig-Veda - 1941 - 345 pages |
| El romanticismo filosófico by Francisco Larroyo - 1941 - 112 pages |
| El romanticismo filosófico by Francisco Larroyo - 1941 - 112 pages |
| El sabueso de los Baskerville by Sir Arthur Conan Doyle - 1941 - 209 pages |
| El Salvador by Pan American Union - 1941 - 31 pages |
| El Salón México by Aaron Copland - 1941 - 15 pages |
| El sayal y la púrpura by Eduardo Mallea - 1941 - 191 pages |
| El sayal y la púrpura by Eduardo Mallea - 1941 - 191 pages |
| El sayal y la púrpura by Eduardo Mallea - 1941 - 191 pages |
| El sentido de la vida (según la psicología individual) by Pablo Luros - 1941 - 16 pages |
| El sentido del vivir by José Andrés Orantes, Celestino Castro - 1941 - 54 pages |
| El sentido popular y la crítica del Martín Fierro by Raúl Quintana - 1941 - 30 pages |
| El sesquicentenario del Papel periódico de la Havana - 1941 - 88 pages |
| El significado de la historia by Will Durant - 1941 - 81 pages |
| El sol sobre las manos by Renata Donghi Halperín - 1941 - 175 pages |
| El superhombre by Jesús António Cova - 1941 - 446 pages |
| El teatro de los griegos by Enrique François, Institución Mitre - 1941 - 256 pages |
| El teatro en Santiago del Nuevo Extremo, 1709-1809 by Eugenio Pereira Salas - 1941 - 56 pages |
| El teatro mexicano de muñecos - 1941 - 262 pages |
| El testamento de Don Hernando Colón y otros documentos para su biografía by José Hernández Díaz, Antonio Muro Orejón - 1941 - 319 pages |
| El testamento de la mariposa by José María Pemán - 1941 - 152 pages |
| El tracoma, rebelde y milenario by Antonio Ros - 1941 - 160 pages |
| El traidor by José Antonio Ramos - 1941 - 192 pages |
| El traidor by José Antonio Ramos - 1941 - 192 pages |
| El traidor by José Antonio Ramos - 1941 - 192 pages |
| El Tratado colombo-venezolano, sus antecedentes históricos - 1941 - 505 pages |
| El trigo en México by Banco Nacional de Crédito Agrícola (Mexico), Banco Nacional de Crédito Agrícola y Ganadero - 1941 |
| El trigo en México by Banco Nacional de Crédito Agrícola y Ganadero - 1941 |
| El trigo en México by Banco Nacional de Crédito Agrícola y Ganadero - 1941 |
| El trigo en México by Banco Nacional de Crédito Agrícola (Mexico), Banco Nacional de Crédito Agrícola y Ganadero - 1941 |
| El Trimestre económico - 1941 |
| El Trimestre económico - 1941 |
| El turismo by Jesús Rodolfo Lozada - 1941 - 192 pages |
| El turismo norteamericano en México, 1934-1940 by Banco de México (1925- ). Departamento de Estudios Económicos - 1941 - 70 pages |
| El unico amor de Don Juan by Josué Quesada - 1941 - 59 pages |
| El Universo - 1941 |
| El vasauro by Pedro de Oña - 1941 - 334 pages |
| El vasauro by Pedro de Oña - 1941 - 334 pages |
| El verdadero amor by María Alicia Domínguez - 1941 - 61 pages |
| El verdadero rep by Miguel B. Márquez - 1941 - 253 pages |
| El verdadero Tlaxcalantongo by Miguel B. Márquez - 1941 - 253 pages |
| El verdadero Tlaxcalantongo by Miguel B. Márquez - 1941 - 253 pages |
| El verdadero valor y significado de las ruinas de Copán(ponencia del Rotary club de Tegucigalpa con ocasión de la décima conferencia distrital) by Rotary Club de Tegucigalpa, Gustav Strómsvik - 1941 - 27 pages |
| El viaje del canciller de Colombia por Sur América by Alfonso Mejía Robledo - 1941 - 66 pages |
| El vicariato apostólico de Don José Benito Lamas, 1854-1857 by Eustaquio Tomé - 1941 - 93 pages |
| El Virrey Iturrigaray y los orígenes de la independencia de Méjico by Enrique Lafuente Ferrari, Instituto Gonzalo Fernández de Oviedo - 1941 - 450 pages |
| El Virrey Iturrigaray y los orígenes de la independencia de Méjico by Enrique Lafuente Ferrari, Instituto Gonzalo Fernández de Oviedo - 1941 - 450 pages |
| El Virrey Iturrigaray y los orígenes de la independencia de Méjico by Enrique Lafuente Ferrari, Instituto Gonzalo Fernández de Oviedo - 1941 - 450 pages |
| El Virrey Iturrigaray y los orígenes de la independencia de Méjico by Enrique Lafuente Ferrari, Instituto Gonzalo Fernández de Oviedo - 1941 - 450 pages |
| El Virrey Iturrigaray y los orígenes de la independencia de Méjico by Enrique Lafuente Ferrari - 1941 - 450 pages |
| El visitador del pobre ... by Concepción Arenal de García Carrasco - 1941 - 165 pages |
| El voluntario. (Le camellard). by Victoriano Lillo Catalán - 1941 - 71 pages |
| El águila y la serpiente by Martín Luis Guzmán - 1941 - 455 pages |
| El águila y la serpiente by Martín Luis Guzmán - 1941 - 455 pages |
| El último amor de Bécquer by Adolfo de Sandoval - 1941 - 196 pages |
| El último jirón de la patria by Bautista Saavedra - 1941 - 132 pages |
| El último jirón de la patria by Bautista Saavedra - 1941 - 132 pages |
| Election Statistics ... by Massachusetts. Office of the Secretary of State - 1941 |
| Electric brooding under winter conditions by Ernest William Callenbach, John Edward Nicholas, Robert Russell Murphy - 1941 - 28 pages |
| Electric eel calling by Shelby Shackelford - 1941 - 256 pages |
| Electric Eel Calling by Shelby Shackelford - 1941 - 258 pages |
| Electric lifts (elevators) by " "Contactor (pseud.) - 1941 - 232 pages |
| Electric lifts (elevators) by " "Contactor (pseud.) - 1941 - 232 pages |
| Electric Light and Power by Ell C. Bennett - 1941 |
| Electric power features of the state water plan in the great central valley basin of California by California. Division of Water Resources, Water Project Authority of the State of California - 1941 - 58 pages |
| Electric power features of the state water plan in the great central valley basin of California by California. Division of Water Resources, Water Project Authority of the State of California - 1941 - 58 pages |
| Electric power stations by Thomas Henry Carr - 1941 |
| Electric power stations by Thomas Henry Carr - 1941 |
| Electric power stations by Thomas Henry Carr - 1941 |
| Electric power stations by Thomas Henry Carr - 1941 |
| Electric Power Statistics, 1920-1940 by United States. Federal Power Commission - 1941 - 147 pages |
| Electric shock as it pertains to the electric fence by Underwriters' Laboratories, H. B. Whitaker - 1941 - 56 pages |
| Electric utility cost units and rations by United States. Federal Power Commission - 1941 - 113 pages |
| Electric utility cost units and ratios by United States. Federal Power Commission - 1941 - 113 pages |
| Electric wiring (domestic) - 1941 - 240 pages |
| Electrical and radio notes for wireless operators by Great Britain. His Majesty's Stationery Office - 1941 - 246 pages |
| Electrical and Wireless Equipment of Aircraft by Sidney George Wybrow - 1941 - 181 pages |
| Electrical breakdown potentials in gas and vapor mixtures by James Nelson Humphrey, Edward Nathan Strait - 1941 |
| Electrical Carbonization of Coal by Harold Stevens - 1941 - 48 pages |
| Electrical circuits and machines by Burtis Lowell̲ Robertson, Leonard J. Black - 1941 - 309 pages |
| Electrical Communication - 1941 |
| Electrical engineering by American Institute of Electrical Engineers - 1941 |
| Electrical Engineering - 1941 |
| Electrical Engineering Fundamentals by George Francis Corcoran, Edwin Bernard Kurtz - 1941 - 450 pages |
| Electrical engineering fundamentals by George Francis Corcoran, Edwin Bernard Kurtz - 1941 - 450 pages |
| Electrical manifestations of reflex and central control of cardiovascular nerves by Charles Berry - 1941 - 119 pages |
| Electrical Manufacturing - 1941 |
| Electrical Manufacturing - 1941 |
| Electrical power, a vital factor in national defense. 1941 by National Association of Manufacturers (U.S.). Statistical dept - 1941 |
| Electrical West - 1941 |
| Electrical Wiring Specifications - 1941 - 181 pages |
| Electrical wiring specifications - 1941 - 181 pages |
| Electrical wiring specifications - 1941 - 181 pages |
| Electrical World - 1941 |
| Electrical World - 1941 |
| Electrical World - 1941 |
| Electrical World - 1941 |
| Electricity and Magnetism by Norman Everett Gilbert - 1941 - 585 pages |
| Electricity and magnetism by Norman Everett Gilbert - 1941 - 585 pages |
| Electricity and magnetism by Norman Everett Gilbert - 1941 - 585 pages |
| Electricity and Magnetism by William Ballantyne Anderson - 1941 - 285 pages |
| Electricity and magnetism for degree students by Sydney George Starling - 1941 - 636 pages |
| Electricity in Aircraft by Wilfrid Evelyn Crook - 1941 - 100 pages |
| Electricity on the Farm by Frederick Shepperd - 1941 |
| Electricity on the Farm by Frederick Shepperd - 1941 |
| Electro-plating and anodising by J. Rosslyn - 1941 - 224 pages |
| Electro-technology - 1941 |
| Electrochemical and solubility studies of the alkaline tungsten-nickel alloy plating bath by Donald A. Swalheim - 1941 - 228 pages |
| Electromagnetic devices by Herbert Christopher Roters - 1941 - 561 pages |
| Electromagnetic devices by Herbert Christopher Roters - 1941 - 561 pages |
| Electron-inertia Effects by Frederick Britton Llewellyn - 1941 - 104 pages |
| Electron-inertia effects by Frederick Britton Llewellyn - 1941 - 104 pages |
| Electron-inertia Effects by Frederick Britton Llewellyn - 1941 - 104 pages |
| Electronic Engineering - 1941 |
| Electronic Engineering - 1941 |
| Electronic Technology - 1941 |
| Electronics by Jacob Millman, Samuel Seely - 1941 - 721 pages |
| Electronics by Jacob Millman, Samuel Seely - 1941 - 721 pages |
| Electronics - 1941 |
| Electronics and Television & Short-wave World - 1941 |
| Electronics World - 1941 |
| Electronics World - 1941 |
| Electrosynthese van eenvoudige aethaanhexacarbonzure esters by Henricus Roelfzema - 1941 - 63 pages |
| Elegier by Tavs Neiiendam - 1941 - 92 pages |
| Elegía a la muerte de León Trotsky by Mario Puga - 1941 - 25 pages |
| Elektrische bahnen - 1941 |
| Elektro biologie by Ferdinand Scheminzky, Fr Scheminzky, F. Bukatsch - 1941 - 198 pages |
| Elektrolytlösungen by Gustav Kortüm - 1941 - 483 pages |
| Elektrometrische, pH-messung mit kleinen lösungsmengen by Franz Fuhrmann - 1941 - 133 pages |
| Elektronengeräte by Ernst Brüche, Alfred Recknagel - 1941 - 447 pages |
| Elektronenröhren als schwingungserzeuger und gleichrichter by Horst Rothe, Werner Kleen - 1941 - 210 pages |
| Elektronenröhren als Schwingungserzeuger und Gleichrichter by Horst Rothe, Werner Kleen - 1941 - 210 pages |
| Elektrotechnische Zeitschrift - 1941 |
| Elektrotechnische Zeitschrift - 1941 |
| Elementary Construction and Interpretation of Financial Statements by Fergus Ormes - 1941 - 113 pages |
| Elementary education of adults by Ruth Kotinsky, American Association for Adult Education - 1941 - 205 pages |
| Elementary education of adults by Ruth Kotinsky, American Association for Adult Education - 1941 - 205 pages |
| Elementary education of adults by Ruth Kotinsky, American Association for Adult Education - 1941 - 205 pages |
| Elementary education of adults by Ruth Kotinsky, American Association for Adult Education - 1941 - 205 pages |
| Elementary English - 1941 |
| Elementary English - 1941 |
| Elementary Japanese for university students ... by Serge Elisséeff, Edwin Oldfather Reischauer, Harvard-Yenching Institute - 1941 |
| Elementary Japanese for University Students ...: Texts by Serge Elisséeff, Edwin Oldfather Reischauer, Harvard-Yenching Institute - 1941 |
| Elementary Logic by Willard Van Orman Quine - 1941 - 169 pages |
| Elementary logic by Willard Van Orman Quine - 1941 - 169 pages |
| Elementary mathematics for engineers by Sir John Ambrose Fleming - 1941 - 110 pages |
| Elementary plane surveying by Raymond Earl Davis - 1941 - 464 pages |
| Elementary Plane Surveying by Raymond Earl Davis - 1941 - 464 pages |
| Elementary quantitative analysis by Hobart Hurd Willard, Nathaniel Howell Furman - 1941 - 531 pages |
| Elementary School Standards by Oregon. Dept. of Education - 1941 - 8 pages |
| Elementary Social Statistics by Thomas Carson McCormick - 1941 - 353 pages |
| Elementary social statistics by Thomas Carson McCormick - 1941 - 353 pages |