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Institution
Collection
Format
Subject
2,957
Rules and practice
2,644
Geology
2,135
Appropriations and expenditures
1,522
Officials and employees
1,447
Water quality
1,335
Management
more ...
1,268
Auditing
1,209
Groundwater
1,106
Geology, Stratigraphic
999
Mines and mineral resources
922
United States Foreign relations
910
Evaluation
879
National security
738
Water-supply
717
Selection and appointment
686
Aquifers
666
Hydrogeology
664
Stream measurements
611
History
511
Automobiles Motors Exhaust gas
509
United States
504
Environmental monitoring
493
Streamflow
483
Paleontology
481
Groundwater flow
478
Forest management
465
Groundwater Quality
454
Emergency management
448
Hydrology
418
Water Pollution
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Author
14,938
Geological Survey (U.S.),
3,228
United States,
2,468
National Renewable Energy Laboratory (U.S.),
2,462
Law Library of Congress (U.S.). Global Legal Research Directorate,
1,274
National Center for Health Statistics (U.S.),
1,210
United States. Department of Health and Human Services. Office of Inspector General,
more ...
1,056
United States. Department of State,
987
United States. Congress. House. Committee on Natural Resources,
839
United States. Congress. Senate. Committee on Homeland Security and Governmental Affairs,
792
United States. Congress. Senate. Committee on Energy and Natural Resources,
762
Library of Congress. Law Library,
663
United States. Bureau of Labor Statistics,
613
United States. Congress. House. Committee on Rules,
589
United States. Congress. Senate. Committee on Commerce, Science, and Transportation,
573
United States. Congress. House. Committee on Financial Services,
552
United States. Environmental Protection Agency,
546
United States. Congress. House. Committee on Foreign Affairs,
544
United States. National Park Service. Natural Resource Stewardship and Science,
516
United States. Department of the Interior. Office of Inspector General,
511
United States. Congress. House. Committee on Energy and Commerce,
500
United States. Department of Agriculture. Economic Research Service,
499
United States. Congress. Senate. Committee on Environment and Public Works,
496
United States. Congress. House. Committee on the Judiciary,
470
Geological Survey (U.S.)
447
United States. Forest Service,
442
Library of Congress. Far Eastern Law Division,
422
United States. Department of Homeland Security. Office of Inspector General,
402
United States. Congress. House. Committee on Homeland Security,
391
United States. Congress. House. Committee on Transportation and Infrastructure,
383
United States. Congress. House. Committee on Small Business,
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Language
English
338
Spanish
92
French
63
Arabic
35
Japanese
34
Russian
more ...
30
Chinese
27
Portuguese
26
German
17
Korean
15
Ukrainian
14
Polish
11
Italian
10
Greek
9
Romanian
9
Vietnamese
8
Dutch
8
Hungarian
7
Bulgarian
7
Kazakh
6
Czech
6
Georgian
6
Latvian
6
Tagalog
6
Turkish
5
Azerbaijani
5
Estonian
5
Mayan
4
Armenian
4
Hindi
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Genre
11,388
Legislative hearings
7,141
Legislative materials
3,527
Technical reports
2,671
Statistics
1,941
Statutes and codes
1,179
Treaties
more ...
1,174
Handbooks and manuals
747
Conference papers and proceedings
550
Electronic government information
435
Bibliographies
231
Case studies
188
Vital statistics
187
Maps
185
Environmental impact statements
131
Biographies
115
Census data
107
Activity books
93
Trivia and miscellanea
86
Indexes
84
Surveys
82
Databases
66
Catalogs
64
Guidebooks
57
Personal correspondence
52
Dictionaries
52
Literature
51
Directories
47
Records (Documents)
42
Congresses
39
Tables (Data)
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Literary Form
Era
271
21st century
246
Cretaceous
226
20th century
155
Tertiary
140
1946-
137
2009-
more ...
95
Paleozoic
92
Eocene
84
Permian
84
Precambrian
76
Quaternary
75
Miocene
74
Cenozoic
66
Civil War, 2011-
64
Ordovician
63
Jurassic
62
Mississippian
61
Devonian
58
1991-
58
Pennsylvanian
57
Pleistocene
56
1970-
54
Mesozoic
51
2016
50
Triassic
47
1959-
41
1960-
41
2001-
40
Civil War, 1861-1865
37
19th century
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Region
39,758
United States
1,903
California
1,428
Alaska
993
Colorado
870
China
766
Arizona
more ...
752
Washington (State)
707
Florida
694
Oregon
647
Nevada
607
New York (State)
607
Texas
587
New Mexico
579
Montana
569
Wyoming
526
Utah
515
Idaho
478
Japan
426
Russia (Federation)
389
Washington (D.C.)
359
Pennsylvania
338
Virginia
330
Mexico
329
Hawaii
328
West (U.S.)
313
Afghanistan
297
Ohio
291
Georgia
287
Canada
283
Louisiana
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Call Number
15,852
K - Law
6,612
E - United States History
6,270
H - Social Science
5,403
A - General Works
4,952
L - Education
2,165
D - World History
more ...
1,929
S - Agriculture
1,495
J - Political Science
1,384
C - Historical Sciences
1,052
G - Geography, Anthropology, Recreation
875
N - Fine Arts
815
T - Technology
675
Q - Science
537
P - Language and Literature
447
V - Naval Science
253
F - General American History
237
U - Military Science
171
R - Medicine
30
Z - Library Science
5
B - Philosophy, Psychology, Religion
5
M - Music
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Year of Publication