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Format: Microfilm
Institution
Collection
Format
Subject
554
Geology
397
Groundwater
373
Water quality
289
Geology, Stratigraphic
243
Mines and mineral resources
202
Geochemical prospecting
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155
Groundwater Quality
134
Hydrology
133
Groundwater Pollution
126
Earthquakes
125
Borings
119
Geochemistry
112
Stream measurements
106
Ore deposits
94
Aquifers
94
Geology, Structural
94
Water-supply
91
Water resources development
86
Hydrogeology
84
Geomagnetism
80
Petroleum Geology
79
Water table
76
Seismology
68
Water Pollution
67
Faults (Geology)
66
Groundwater flow
60
Formations (Geology)
58
Earthquake hazard analysis
58
Sediments (Geology)
57
Landslides
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Author
5,258
Geological Survey (U.S.)
86
United States. Department of Energy. Nevada Operations Office
80
United States. Department of Energy
57
United States. Environmental Protection Agency
56
Saudi Arabia. Deputy Ministry for Mineral Resources
51
United States. Bureau of Land Management
more ...
46
Fox, J. E. 1943-
45
United States. Bureau of Reclamation
38
Bullock, John H.
37
Higley, Debra K.
37
Indiana. Department of Transportation
35
Adrian, Betty M.
30
National Regional Aquifer Systems Analysis Program (U.S.)
30
Voelker, David C.
29
United States. Army. Corps of Engineers
28
Robinson, Bret A.
27
Miller, Robert L. 1941-
26
Billingsley, George H.
26
McHugh, John B.
26
National Water-Quality Assessment Program (U.S.)
25
Arkansas Soil and Water Conservation Commission
24
Maryland Geological Survey
23
Montana Bureau of Mines and Geology
23
United States. National Park Service
22
Colton, Roger B. 1924-
22
Desborough, George A.
22
United States. Bureau of Indian Affairs
22
United States. Bureau of Mines
21
Kansas Geological Survey
21
United States. Agency for International Development
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Language
Genre
844
Maps
130
Bibliographies
95
Periodicals
94
Conference papers and proceedings
80
Statistics
63
Databases
more ...
34
Serial publications
32
Handbooks and manuals
30
Congresses
26
Drawings
24
Catalogs
16
Guidebooks
16
Technical reports
12
Geographic information systems
11
Software
11
Topographic maps
6
Directories
6
Observations
5
Remote-sensing maps
4
Electronic government information United States
4
Tables (Data)
3
Abstracts
3
Graphs
3
Remote-sensing images
2
Academic theses
2
Aerial photographs
2
Bathymetric maps
2
Dictionaries
2
Geological maps
2
Indexes
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Literary Form
Era
69
Cretaceous
32
Cenozoic
23
Tertiary
21
Quaternary
18
Paleozoic
17
Miocene
more ...
17
Pliocene
15
Mesozoic
12
Holocene
12
Precambrian
10
Jurassic
9
Permian
9
Pleistocene
8
Mississippian
7
Neogene
7
Oligocene
6
Pennsylvanian
6
Proterozoic
5
Eocene
5
Ordovician
5
Paleogene
5
Triassic
3
Carboniferous
3
Paleocene
2
Silurian
1
1743-1826
1
Archaean
1
Cambrian
1
Devonian
1
Earthquake, 1984
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Region
549
California
361
Nevada
313
Alaska
205
Colorado
205
United States
167
Arizona
more ...
136
Utah
121
New Mexico
119
Washington (State)
115
Oregon
114
Idaho
108
Florida
105
Montana
66
Wyoming
65
Hawaii
62
Texas
58
Indiana
57
Saudi Arabia
55
Kansas
54
Arkansas
52
South Carolina
51
North Carolina
50
Minnesota
49
Missouri
49
Pennsylvania
49
Virginia
48
Nye County
48
Powder River Basin (Wyo. and Mont.)
45
Georgia
43
New York (State)
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