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Institution
Collection
Format
Subject
1,852
Geology
854
Geology, Stratigraphic
678
Mines and mineral resources
358
Paleontology
228
Groundwater
170
Water quality
more ...
142
Ore deposits
142
Petrology
122
Water-supply
115
Uranium ores
112
Earthquakes
112
Geochemistry
111
California
99
Hydrology
92
Water Pollution
79
Paleobotany
79
Stream measurements
78
Alaska
76
Volcanic ash, tuff, etc
75
Geology, Structural
73
Coal
69
Sedimentation and deposition
64
Igneous rocks
62
Geophysics
60
Earth sciences
60
Hydrogeological surveys
54
Floods
52
Arizona
52
Gold ores
51
Colorado
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Author
2,570
Geological Survey (U.S.)
178
U.S. Atomic Energy Commission
105
U.S. Fish and Wildlife Service
60
United States. National Aeronautics and Space Administration
54
United States. National Park Service
47
Smithsonian Institution. Press
more ...
45
United States. Bureau of Land Management
44
United States. Bureau of Mines
43
Rocky Mountain Research Station (Fort Collins, Colo.)
35
Geological Survey (U.S.),
34
Marshall, R. B. 1867-1949
31
Kentucky Geological Survey
31
National Wetlands Research Center (U.S.)
31
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
27
National Water-Quality Assessment Program (U.S.)
27
United States. Department of Energy
24
Sims, P. K. 1918-2011
23
Smith, Philip S. 1877-1949
23
Stover, Carl W.
23
U.S. Fish and Wildlife Service. Region 1
23
United States. Bureau of Reclamation
22
Cobban, William A., 1916-2015
22
Imlay, Ralph W. 1908-1989
22
Moffit, Fred H. 1874-1958?
22
Rabbitt, Mary C.
21
United States. National Oceanic and Atmospheric Administration
19
Mertie, John Beaver, 1888-1980
19
Sando, William Jasper
19
United States. Bureau of Indian Affairs
19
Weld, Betsy A.
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Language
Genre
125
Conference papers and proceedings
123
Bibliographies
77
Congresses
71
Technical reports
54
Abstracts
54
Handbooks and manuals
more ...
51
Maps
45
Periodicals
29
Statistics
19
Nomenclature
18
Classification
14
Guidebooks
13
Surveys
12
Catalogs
11
Indexes
11
Tables (Data)
10
Databases
10
Illustrated works
9
Dictionaries
9
Government publications
8
Directories
8
Identification
8
Literature
7
Topographic maps
6
Graphs
5
Geographic information systems
5
Observations
5
Popular works
4
Festschriften
4
Geological maps
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Literary Form
Era
186
Cretaceous
109
Tertiary
78
Precambrian
68
Cenozoic
68
Eocene
67
Permian
more ...
65
Miocene
62
Paleozoic
50
Mississippian
48
Pennsylvanian
46
Jurassic
45
Mesozoic
45
Ordovician
44
Quaternary
43
Devonian
40
Pleistocene
40
Triassic
36
Proterozoic
32
Oligocene
25
Cambrian
24
Pliocene
22
Silurian
20
Paleocene
19
Carboniferous
15
Holocene
12
Archaean
9
Neogene
3
1834-1902
3
19th century
3
Paleogene
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Region
747
United States
477
Alaska
449
California
371
Colorado
261
Nevada
241
Utah
more ...
222
Arizona
219
Wyoming
211
Montana
178
Idaho
153
New Mexico
142
Oregon
139
Washington (State)
72
Texas
70
New York (State)
69
Kentucky
68
Virginia
67
West (U.S.)
64
Pennsylvania
63
Hawaii
62
Florida
61
South Dakota
60
Michigan
59
North America
50
Wisconsin
48
Kansas
46
North Carolina
46
Tennessee
43
Arkansas
40
Ohio
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Call Number
Year of Publication