| X Congreso Peruano el Hombre y la Cultura Andina "José Carlos Marit́egui" - 1998 |
| X Encuentros Abiertos de Fotografía by Escuela Argentina de Fotografía - 1998 - 95 pages |
| X pawilon Cytadeli Warszawskiej, 1827-1997 by Andrzej Stawarz - 1998 - 327 pages |
| X-ray and Ultraviolet Spectroscopy and Polarimetry by Silvano Fineschi - 1998 |
| X-ray emission in early-type galaxies surveyed by ROSAT. by Beth Anne Brown - 1998 |
| X-ray Micro-beam Study of Reliability in Al-Cu Interconnect Lines by Harun Hadi Solak - 1998 - 428 pages |
| Xakas by Gregory D. S. Anderson - 1998 - 98 pages |
| Xalapa by Eduardo Emilio Zárate, Alfredo Pavón - 1998 - 99 pages |
| Xalatlaco by Donaciano Vargas Ordóñez - 1998 - 144 pages |
| Xcp - 1998 |
| Xcp - 1998 |
| Xel yi by Xaalima Saar - 1998 - 34 pages |
| Xenophon, Sokratische Denkwürdigkeiten by Xenophon, Jan Philipp Reemtsma - 1998 - 271 pages |
| Xenotransplantation by Jay Fishman, David H. Sachs, Rashid Shaikh - 1998 - 251 pages |
| Xeografía do medo by Francisco Duarte Mangas - 1998 - 160 pages |
| Xeque e mate o adversário by João de Deus Carvalho - 1998 - 311 pages |
| Xerographic Photoreceptors and Organic Photorefractive Materials by Stephen Ducharme, James W. Stasiak - 1998 |
| XI Congreso Latinoamericano de Perforación - 1998 |
| XI Congreso Latinoamericano de Perforación - 1998 |
| XI Congreso Latinoamericano de Perforación - 1998 |
| Xi ju yi shu - 1998 |
| Xi qu yi shu - 1998 |
| XI Simposio de Investigaciones Arqueologícas en Guatemala - 1998 - 929 pages |
| XI Simposio de investigaciones arqueologícas en Guatemala, 1997 by Juan Pedro Laporte, Héctor L. Escobedo - 1998 - 929 pages |
| XI Simposio de investigaciones arqueologícas en Guatemala, 1997 - 1998 - 929 pages |
| Xian dai qi ye dao kan - 1998 |
| Xian zheng shi dai - 1998 |
| Xiao shuo jie - 1998 |
| Xiao shuo lin - 1998 |
| Xiao shuo yue bao - 1998 |
| Xiao shuo yue bao - 1998 |
| XII-XVII by Saint Cyril (Patriarch of Alexandria), Pierre Évieux, W. H. Burns - 1998 - 313 pages |
| XII-XVII by Saint Cyril (Patriarch of Alexandria), Pierre Évieux, W. H. Burns - 1998 - 313 pages |
| XIII SBMicro, International Conference on Microelectronics and Packaging, ICMP'98: Advanced courses and invited papers by Sociedade Brasileira de Microeletrônica, International Microelectronics and Packaging Society - 1998 |
| XIII Seminario sobre Realidad Nacional - 1998 - 56 pages |
| XIII. ve XIV. yüzyıllarda Kayseri'de bilim ve din sempozyumu by Celal Kırca - 1998 - 152 pages |
| XIIè Congrés Valencià de Filosofia - 1998 - 387 pages |
| Xin hua wen zhai - 1998 |
| Xin hua yue bao. Xin-hua yuebao - 1998 |
| Xin hua yue bao. Xin-hua yuebao - 1998 |
| Xin hua yue bao. Xin-hua yuebao - 1998 |
| Xin li xue - 1998 |
| Xin li xue - 1998 |
| Xin li xue - 1998 |
| Xin shuang zhou kan - 1998 |
| Xin wen chuan bo - 1998 |
| Xin wen feng bao by 黃鍾青 - 1998 - 453 pages |
| Xin wen zhan xian - 1998 |
| Xing shi fa xue - 1998 |
| Xing shi fa xue - 1998 |
| Xing xing - 1998 |
| Xing xing - 1998 |
| Xing zheng yuan nong ye wei yuan hui nian bao - 1998 |
| Xingiang tongji nianjian - 1998 |
| Xinjiang yi shu - 1998 |
| Xipe-totek - 1998 |
| Xisa Beili - 1998 - 140 pages |
| XIX. yüzyılda Canik (Samsun) Sancağı'nın sosyal ekonomik yapısı by M. Emin Yolalıcı - 1998 - 183 pages |
| Xiężniczka by Krzysztof Rutkowski - 1998 - 44 pages |
| XLVI Asamblea-Seminario Anual de Escuelas de Trabajo Social by Julia Bernal Galaviz - 1998 - 270 pages |
| XMLコンテンツの作り方 by 川俣晶 - 1998 - 134 pages |
| Xochitécatl by Mari Carmen Serra Puche - 1998 - 141 pages |
| Xonacatlán by Efraín Bonifacio Alva, Programa de Identidad Estatal (Mexico), Instituto Mexiquense de Cultura, Asociación Mexiquense de Cronistas Municipales - 1998 - 131 pages |
| XPress 4 sur Macintosh by Sandrine Sorin - 1998 - 89 pages |
| Xu hướng đổi mới trong lịch sử Việt Nam by Đình Nhân Phạm, Thị Thanh Hòa Lê, Đoàn Trinh Doãn, Trung tâm Unesco thông tin tư liệu lịch sử và văn hóa Việt Nam - 1998 - 399 pages |
| Xu hướng đổi mới trong lịch sử Việt Nam by Xuân Lâm Đinh, Văn Hôǹg Nguyêñ - 1998 - 304 pages |
| Xul Solar by Alejandro Xul Solar - 1998 - 128 pages |
| Xuân Diệu by Khánh Thơ Lưu - 1998 - 459 pages |
| XV aniversario con la historia del puerto de Buenos Aires, 1983-1998 - 1998 - 64 pages |
| XV-XVI века в истории Марийского края by Александр Геннадьевич Бахтин - 1998 - 191 pages |
| Xvaršiuli ena: Pʻonetika by Elizbar Lomtʻaże - 1998 |
| XVI Asamblea General y Reuniones de Consulta by Pan American Institute of Geography and History. General Assembly - 1998 - 295 pages |
| XVII yüzyıl tezkirelerinde şair ve eser üzerine değerlendirmeler by Filiz Kılıç - 1998 - 402 pages |
| XVIIe siècle - 1998 |
| XVIIe siècle - 1998 |
| XVIIe siècle - 1998 |
| XVIII. zimní olympijské hry Nagano '98 by Alexandr Žurman, Český olympijský výbor - 1998 - 119 pages |
| XXII век, бойня by Юрий Петухов - 1998 - 366 pages |
| XXIV Bienal de São Paulo: Arte contemporânea Brasileira by Paulo Herkenhoff, Adriano Pedrosa, Pavilhão Ciccillo Matarazzo (São Paulo, Brazil) - 1998 - 4 pages |
| XXIV Sonetos by Enrique Badosa - 1998 - 32 pages |
| XXX-lecie Instytutu Nauk Politycznych Uniwersytetu Warszawskiego by Uniwersytet Warszawski. Instytut Nauk Politycznych - 1998 - 133 pages |
| Xã hội học - 1998 |
| Xã hội học nghệ thuật by Quang Thắng Bùi - 1998 - 196 pages |
| Xã hội quan by Tấn Long Nguyễn, Canh Phan - 1998 |