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Institution
Format
Subject
2,618
Geology
1,549
Groundwater
1,394
Water quality
1,144
Geology, Stratigraphic
959
Mines and mineral resources
931
Aquifers
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701
Water-supply
693
Hydrogeology
639
Stream measurements
482
Groundwater flow
472
Streamflow
460
Hydrology
460
Paleontology
457
Groundwater Quality
375
Floods
349
Groundwater Pollution
340
Water Pollution
211
Water table
204
Geochemistry
201
Petrology
200
Ore deposits
192
Water levels
189
Uranium ores
169
Sediment transport
158
Water quality management
155
Earthquakes
155
Sedimentation and deposition
152
Groundwater flow Mathematical models
143
Water quality Measurement
137
Flood forecasting
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Author
Geological Survey (U.S.),
337
U.S. Atomic Energy Commission,
262
National Water-Quality Assessment Program (U.S.)
219
United States. Bureau of Reclamation
183
United States. Environmental Protection Agency
180
United States. Army. Corps of Engineers
more ...
179
U.S. Fish and Wildlife Service
171
United States. Bureau of Land Management
171
United States. National Park Service
159
United States. Department of Energy
95
Afghan Geological Survey,
82
Southwest Florida Water Management District (Fla.)
75
United States. Bureau of Indian Affairs
74
New York (State). Department of Environmental Conservation
73
Marshall, R. B. 1867-1949,
68
U.S. Task Force for Business and Stability Operations
60
Washington (State). Department of Ecology
56
California. Department of Water Resources
56
U.S. Atomic Energy Commission
54
Miller, Todd S.,
49
United States. Army. Corps of Engineers,
48
South Florida Water Management District (Fla.)
43
Florida. Department of Environmental Regulation
43
New Jersey. Department of Environmental Protection
42
Wisconsin. Department of Natural Resources
41
Nassau County (N.Y.). Department of Public Works
41
United States. Federal Emergency Management Agency
40
Arkansas Soil and Water Conservation Commission
40
Kentucky Geological Survey
40
United States. National Park Service,
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Language
Genre
2,657
Maps
958
Topographic maps
252
Electronic government information
137
Bibliographies
118
Geological maps
100
Statistics
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92
Conference papers and proceedings
79
Indexes
78
Surveys
65
Periodicals
58
Remote-sensing images
56
Handbooks and manuals
43
Databases
39
Bathymetric maps
36
Nomenclature
27
Gazetteers
25
Technical reports
20
Remote-sensing maps
19
Festschriften
16
Dictionaries
15
Pictures
14
Guidebooks
13
Atlases
12
Abstracts
12
Posters
11
Catalogs
11
Congresses
11
Tables (Data)
10
Case studies
10
Fiction
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Literary Form
Era
266
Cretaceous
155
Tertiary
98
Paleozoic
91
Eocene
84
Precambrian
80
Permian
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79
Quaternary
75
Cenozoic
74
Miocene
64
Ordovician
63
Jurassic
62
Mississippian
61
Devonian
59
Pennsylvanian
55
Pleistocene
54
Mesozoic
50
Triassic
35
Cambrian
34
Carboniferous
34
Oligocene
31
Silurian
30
Holocene
30
Pliocene
30
Proterozoic
19
Paleocene
14
Archaean
8
21st century
8
Neogene
5
Paleogene
5
Pre-Quaternary
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Region
1,080
California
1,003
United States
798
Alaska
661
Colorado
484
Florida
482
Nevada
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468
Washington (State)
455
Arizona
405
Montana
403
New York (State)
391
Wyoming
375
Idaho
366
Oregon
365
Utah
337
New Mexico
330
Texas
256
Pennsylvania
205
Kansas
185
Virginia
181
Minnesota
180
Wisconsin
176
North Carolina
174
Arkansas
171
Missouri
170
Georgia
169
New Jersey
167
Hawaii
166
Louisiana
159
Kentucky
155
Massachusetts
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Call Number
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