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Congrès 108 Science 97 History 88 Geology 85 Research 83 Sciences 72 Standards 71 més ... Normes 63 Histoire 57 Recherche 55 Géologie 54 Measurement 53 Coastal ecology 49 Mathematics 44 Conservation 41 Testing 41 Mesure 40 Ecology 39 Environmental aspects 39 Mathématiques 35 Paleontology 35 Birds 34 Gestion 34 Data processing 33 Aspect de l'environnement 32 Science and state 32 Informatique 31 Evaluation 30 Essais 29 Geology, Stratigraphic 29 menys ...

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Document de govern Llibre 2,075 Actes de congresos 157 Publicació Periòdica 27 Thesis 3 Mapa 2 més ... Material de referència 2 Foto 1 veure tots ... menys ...

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United States. National Bureau of Standards 160 National Institute of Standards and Technology (U.S.) 75 Geological Survey (U.S.) 74 U.S. Fish and Wildlife. Research and Development 58 U.S. Fish and Wildlife 57 National Wetlands Research Center (U.S.) 55 més ... U.S. Army Engineer Waterways Experiment Station. Coastal Ecology Group 53 U.S. Fish and Wildlife Service 44 National Science Foundation (U.S.) 35 United States. National Aeronautics and Space Administration 25 United States. National Bureau of Standards. Computation Laboratory 21 Smithsonian Institution 19 United States. Congress. Office of Technology Assessment 19 Bent, Arthur Cleveland, 1866-1954 17 Eisler, Ronald, 1932- 17 New York State Museum 16 U.S. Fish and Wildlife Service. Region 8. Research and Development 16 National Wetlands Inventory (U.S.) 14 Reed, Porter B. 14 United States. Department of Commerce 14 Organisation for Economic Co-operation and Development 13 U.S. Atomic Energy Commission 13 Institute for Materials Research (U.S.) 12 National Institute of Law Enforcement and Criminal Justice 12 Law Enforcement Standards Laboratory 11 Patuxent Wildlife Research Center 11 United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch 11 Mavrodineanu, Radu, 1910- 10 Mechanical Failures Prevention Group 10 Shives, T. R. 10 veure tots ... menys ...

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Congresses 255 Conference papers and proceedings 249 Congrès 216 Government publications 107 Actes de congrès 72 Tables 66 més ... History 64 Congress 59 Technical reports 47 Rapports techniques 46 technical reports 46 Bibliography 38 Bibliographies 35 Tables (Data) 35 Bibliographie 29 Handbooks and manuals 27 Biography 23 Internet resource 20 Maps 20 Periodicals 20 Guides, manuels, etc 19 Handbooks, manuals, etc 19 Statistics 19 Tables (Données) 18 tables (documents) 18 Biographies 17 Catalogs 14 Guides et manuels 14 Statistiques 14 Directories 13 veure tots ... menys ...

Congrès 108 Science 97 History 88 Geology 85 Research 83 Sciences 72 més ... Standards 71 Normes 63 Histoire 57 Recherche 55 Géologie 54 Measurement 53 Coastal ecology 49 Mathematics 44 Conservation 41 Testing 41 Mesure 40 Ecology 39 Environmental aspects 39 Mathématiques 35 Paleontology 35 Birds 34 Gestion 34 Data processing 33 Aspect de l'environnement 32 Science and state 32 Informatique 31 Evaluation 30 Essais 29 Geology, Stratigraphic 29 veure tots ... menys ...

Paleozoic 7 19e siècle 6 Ordovician 6 Ordovicien 6 Paléozoïque 6 19th century 5 més ... Cambrian 5 Devonian 5 From 230 to 570 million years ago 5 From 425 to 500 million years ago 5 Silurian 5 Cambrien 4 Dévonien 4 Geschichte 4 Mesozoic 4 Precambrian 4 Précambrien 4 Silurien 4 1800-1899 3 18th century 3 20th century 3 Pleistocene 3 1797-1878 2 1798-1882 2 1800-1999 2 1823-1887 2 1877-1968 2 1879-1955 2 1885-1972 2 1964 2 veure tots ... menys ...

United States 409 États-Unis 256 New York (State) 91 New York (État) 56 North America 42 Atlantic Coast (U.S.) 26 més ... California 23 Amérique du Nord 19 Canada 16 Mars (Planet) 16 Moon 15 Pacific Coast (U.S.) 14 Outer space 13 West (U.S.) 12 Californie 11 Mars (Planète) 11 Alaska 10 Atlantic Coast 10 Colorado 10 Earth (Planet) 10 Florida 10 Pennsylvania 10 Washington (State) 9 West United States 9 Arizona 8 Atlantique, Côte de l' (États-Unis) 8 Lune 8 Mexico, Gulf of 8 Pacific Coast 8 Terre 8 veure tots ... menys ...

Rensselaer Polytechnic Institute 1,060 Pace University 242 Adelphi University 123 Rochester Institute of Technology 90 United States Military Academy 58 Siena College 51 més ... Vassar College 50 Marist College 28 Le Moyne College 26 Bard College 24 Pratt Institute 17 veure tots ... menys ...

English 2,107 Russian 23 French 18 German 15 Czech 1 Latin 1 més ... Spanish 1 veure tots ... menys ...