H - Social Science 9 J - Political Science 5 Q - Science 3 T - Technology 3 D - World History 1 G - Geography, Anthropology, Recreation 1 R - Medicine 1 S - Agriculture 1 查看所有 ...

United States Bureau of Labor Statistics 6 United States Congress 4 National Institute of Standards and Technology (U.S.) 3 United States International Trade Commission 3 Geological Survey (U.S.) 2 National Institute of Standards and Technology (U.S.) Information Resources and Services Division 2 National Institute of Standards and Technology (U.S.) Office of Information Services 2 United States Agricultural Marketing Service 2 United States Crop Reporting Board 2 United States National Bureau of Standards 2 Air Resources Laboratory (U.S.) Meteorology Division 1 Brookhaven National Laboratory 1 Canada Centre for Mineral and Energy Technology 1 Canada Conservation and Renewable Energy Branch 1 Canada Earth Physics Branch 1 Canada Minerals 1 Canada Office of Energy Research and Development 1 Chemical Science and Technology Laboratory (U.S.) 1 Clement, J. K (John Kay), 1880- 1 Cobb, Edward H (Edward Huntington), 1916-1983 1 Cohen, Nathan M (Nathan Marshall), 1921- 1 Colorado Geological Survey 1 Egy, Willard Leo, 1885- 1 Geological Survey of Canada 1 Greenwald, H. P (Harold Putnam), 1893- 1 Jones, L. M (Lewis M.) 1 Kirkham, Robert M 1 Loomer, E. I 1 NVLAP (Program : U.S.) 1 National Institute of Standards and Technology (U.S.) Office of Standard Reference Materials 1 查看所有 ...

English 48 French 7

Periodicals 35 Statistics 11 Directories 4 Bibliographies 3 Bibliography 3 Catalogs 3 Maps 2 Abstracts 1 CD-ROMs 1 Chronology 1 Congresses 1 Film catalogs 1 Geological maps 1 Maps, Topographic 1 Observations 1 Thematic maps 1 查看所有 ...

1918- 1 Since 1918 1

United States 27 Canada 7 Aegean Sea 1 Aegean Sea Region 1 Alaska 1 Colorado 1 Cyprus 1 Europe 1 Greece 1 Montana 1 Pacific Islands (Trust Territory) 1 Turkey 1 查看所有 ...