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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
U Tex Austin Bureau of Economic Geology Guidebook
U. S. 42nd Congress, 1st session, House Ex. Document
U. S. Geological and Geographical Survey of the Territories Annual Report 12
U. S. Geological Survey Atlas, Columbia Folio
U. S. Geological Survey Bulletin
U. S. Geological Survey Professional Papers
U. S. Geological Survey, Open File Report
U. S. National Museum, Bulletin
U.S. 32nd Congress Special Session, S. Ex Doc.
U.S. Geological Explorations 40th Parallel
U.S. Geological Survey and The National Academies Short Research Paper
U.S. Geological Survey Bulletin
U.S. Geological Survey Open File Report 94-217
U.S. Geological Survey Professional Paper
U.S. National Museum, Bulletin
Uber tertiare Versteinerungen von den Bogenfelser Diamantfeldern
Uber und Mittlungen Oberrhein Geologisches Verhandlungen, N.F.
Übersicht der Arbeiten und Veränderungen der Schlesischen Gesellschaft für Vaterländische Cultur
Ubutaku Reports of the Deep Sea Drilling Project
Uchenyy zapiski Tartusskogo Gosudarstvennogo Universiteta
Ukrainskiy Entomologicheskiy Zhurnal
United Nation Environment Programme and Food and Agricultural Organization of the UN
United States Department of the Interior Geological Survey
United States Department of the Interior Geological Survey Professional Paper
United States Fish and Wildlife Service Special Scientific Report - Fisheries
United States Geological and Geographical Survey of the Territories, Bulletin
United States Geological Survey
United States Geological Survey Annual Report
United States Geological Survey Bulletin
United States Geological Survey Circular
United States Geological Survey Open-File Report
United States Geological Survey Professional Paper
United States Geological Survey Professional Papers
United States Geological Survey, Monograph
United States Geolological Survey Territories, Bulletin
United States National Museum Bulletin
United States National Museum Proceedings
Univ Ks Nat Hist Mus Misc Publ
Univ Nat Auton Mexico Inst Geol Revista
Univ. Nal. Auton. Mexico, Inst. Geologia, Revista
Univeridad Nacional Autonoma de Mexico, Instituto de Geologia Revista
Univeristy of Kansas Science Bulletin
Universidad de Chile, Departamento de Geología
Universidad Industrial de Santander, Boletin de Geologia
Universidad Nacional Autónoma de México, Instituto de Biología, Anales
Universidad Nacional Autonoma de Mexico, Instituto de Geologia Revista
Universidad Nacional Autónoma de México, Instituto de Geología, Boletín
Universidad Nacional Autonoma de Mexico, Instituto de Geologia, Paleontologia Mexicana
Universidad Nacional Autónoma de México, Instituto de Geología, Paleontología Mexicana
Universidad Nacional Autónoma de México, Instituto de Geologia, Revista
Universidad Nacional Autonoma de Mexico, Instituto Geologia, Boletin
Universidad Nacional Autonoma de Mexico. Instituto de Geologia, Paleontologia Mexicana
University Geological Survey of Kansas
University Museum, Department of Geology and Geography, University of Cincinnati
University Museum, University of Tokyo, Material Reports
University National Auton, Mexico, Institute Geologia, Revista
University of California Publication American Archaeology and Ethnology
University of California Publication Bulletin of the Department of Geology
University of California Publications Bulletin of the Department of Geological Sciences
University of California Publications Bulletin of the Department of Geology
University of California Publications in Entomology
University of California Publications in Geological Sciences
University of California Publications in Geology
University of California Publications in Zoology
University of California Publications, Bulletin of the Department of Gelogy
University of California Publications, Bulletin of the Department of Geological Sciences
University of California Publications, Bulletin of the Department of Geology
University of California Publications: Bulletin of the Department of Geology
University of California, Riverside, Campus Museum Contribution
University of Colorado Series in Earth Sciences
University of Colorado Studies
University of Iowa Studies in Natural History
University of Kansas Museum of Natural History, Miscellaneous Publications
University of Kansas Paleontological Contributions
University of Kansas Paleontological Contributions Mollusca
University of Kansas Paleontological Contributions Vertebrata
University of Kansas Paleontological Contributions, Echinodermata Article
University of Kansas Paleontological Contributions, Echinodermata, Article
University of Kansas Paleontological Contributions, Mollusca
University of Kansas Paleontological Contributions, Monograph
University of Kansas Paleontological Contributions, Paper
University of Kansas Paleontological Contributions, Protozoa
University of Kansas Paleontological Contributions, Supplement of Echinodermata Articles
University of Kansas Publications Museum of Natural History
University of Kansas Publications, Museum of Natural History
University of Kansas Quarterly
University of Kansas Science Bulletin
University of Kansas, Paleontological Contributions, Echinodermata Article
University of Louisville Studies in Paleontology and Stratigraphy
University of Michigan Contributions from the Museum of Paleontology
University of Michigan Contributions from the Musuem of Paleontology
University of Michigan Museum of Paleontology, Papers on Paleontology
University of Missouri studies
University of Nebraska Lincoln News, Museum Notes
University of Nebraska State Museum Bulletin
University of Nebraska State Museum Notes
University of Nebraska State Museum, Museum Notes
University of Nebraska Studies
University of Oklahoma Bulletin
University of Queensland Papers, Department of Geology
University of Queensland Papers, Dept. of Geology
University of Queensland Press, Brisbane, Department of Geology
University of Tennessee Department of Earth and Planetary Sciences, Studies in Geology
University of Tennessee Studies in Geology
University of Tennessee, Department of Geological Sciences, Studies in Geology
University of Tennessee, Studies in Geology
University of Texas Publication
University of Toronto Quarterly
University of Toronto Studies in Geology
University of Toronto Studies of Geological Survey
University of Toronto Studies, Geological Series
University of Toronto Studies, Geology Series
University of Tsukuba, Institute of Geoscience, Science Reports, Section B, Geological Science
University of Washington Publications in Geology
University of Wyoming Contributions to Geology
University of Wyoming Publication
University of Wyoming Publications
Upper Precambrian and Cambrian palaeontology of the East-European Platform
Upravleniia Geologii Soveta Ministorov Tadzh. SSR. Trudy, Paleontologiya i Stratigrafiya
Upravleniia Geologii Soveta Ministorov Tadzhstan, SSR Trudy, Paleontologiya i Stratigrafiya
US Geological and Geographical Survey of the Territories, Miscellaneous Publications
US Geological Survey Bulletin Report
US Geological Survey Professional Paper
Us Geological Survey Professional Paper
Ústredího Ústavu Geologick reho, Vestník
Utah Geol Miner Survey Bulletin
Utah Geological and Mineral Survey, Survey Notes
Utah Geological Survey Bulletin, Paleontology Series
Utah Geological Survey Miscellaneous Publication
Utrecht Micropaleontological Bulletins
Utrecht Micropaleontological Bulletins, Special Publication
Uzbekiston Geologiya Zhurnali = Uzbekskiy Geologicheskiy Zhurnal
Uzbekskii Geologicheskii Zhurnal (Uzbek Geological Journal).