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Institution
Subject
210
Geology
98
Geology, Stratigraphic
93
Water quality
76
Mines and mineral resources
39
Groundwater
29
Ore deposits
more ...
27
Water Pollution
26
Land titles Registration and transfer
26
Stream measurements
23
Geochemistry
23
Streamflow
23
Water-supply
22
Hydrology
20
Uranium ores
19
Groundwater Pollution
19
Petrology
17
Oil-shales
16
Green River Formation
14
Aquifers
14
Environmental monitoring
14
Forest reserves Law and legislation
14
Groundwater Quality
14
Paleontology
13
Real property, Exchange of
12
Hydrogeology
12
River sediments
11
Acid mine drainage
11
Floods
11
Management
11
National parks and reserves
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Author
626
Geological Survey (U.S.),
146
Geological Survey (U.S.)
46
U.S. Atomic Energy Commission,
29
United States. Bureau of Land Management
27
United States. Congress. Senate. Committee on Energy and Natural Resources,
26
United States. Bureau of Reclamation
more ...
23
United States,
21
United States. Congress. House. Committee on Natural Resources,
18
United States. Congress. Senate. Committee on Energy and Natural Resources
16
National Renewable Energy Laboratory (U.S.),
16
U.S. Fish and Wildlife Service
16
United States. National Park Service
15
Colorado River Water Conservation District (Colo.)
15
Colorado Water Conservation Board
15
National Renewable Energy Laboratory (U.S.)
15
United States. National Park Service. Natural Resource Stewardship and Science,
14
United States. Forest Service
13
Rocky Mountain Research Station (Fort Collins, Colo.),
13
United States. Environmental Protection Agency
12
U.S. Fish and Wildlife Service,
11
Colorado. Hazardous Materials and Waste Management Division
11
United States. Department of the Interior. Office of Inspector General,
11
United States. Forest Service,
10
Colorado. Department of Public Health and Environment
9
Butler, David L. 1946-
9
Colorado Geological Survey
9
Elliott, John G. 1951-
9
Natural Resource Program Center (U.S.),
9
United States. Bureau of Land Management. Colorado State Office
8
Colorado State Metal Mining Fund
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Language
Genre
45
Legislative materials
36
Statistics
29
Electronic government information
24
Legislative hearings
23
Technical reports
21
Statutes and codes
more ...
8
Case studies
8
Maps
7
Environmental impact statements
5
Guidebooks
4
Databases
4
Handbooks and manuals
3
Census data
3
Conference papers and proceedings
3
Directories
3
Nomenclature
2
Activity books
1
Bibliographies
1
Catalogs
1
Census, 2010
1
Electronic books
1
Gazetteers
1
Graphs
1
Illustrated works
1
Indexes
1
Literature
1
Statistics, Medical
1
Surveys
1
Wildlife recovery plans
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Literary Form
Era
27
Cretaceous
16
Tertiary
15
Eocene
11
Precambrian
8
Pennsylvanian
6
Jurassic
more ...
5
Permian
5
Triassic
4
Oligocene
4
Paleozoic
4
Quaternary
3
19th century
2
Cenozoic
2
Holocene
2
Miocene
2
Pleistocene
1
1809-1865
1
1925-1968
1
1929-1968
1
1967-2006
1
2001-2009
1
Cambrian
1
Carboniferous
1
Devonian
1
Mississippian
1
Paleocene
1
Paleogene
1
To 1848
1
To 1876
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Region
Colorado
77
Utah
58
Wyoming
34
Denver
34
United States
31
New Mexico
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30
Piceance Creek Basin
23
Green River Formation
22
Rocky Mountain National Park
20
Jefferson County
18
Clear Creek County
16
Gunnison County
15
Boulder County
15
Park County
15
Piceance Creek Watershed
15
Rocky Mountain National Park (Colo.)
13
Yampa River Watershed
12
White River National Forest
11
Animas River Watershed (Colo. and N.M.)
11
Denver Region
11
Nevada
11
Rocky Flats National Wildlife Refuge (Colo.)
11
San Juan County
11
Summit County
10
Arizona
10
Front Range (Colo. and Wyo.)
10
Great Sand Dunes National Park and Preserve
10
Leadville
10
Mesa County
10
Montana
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Call Number
118
C - Historical Sciences
108
K - Law
68
A - General Works
57
E - United States History
27
Q - Science
17
H - Social Science
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12
G - Geography, Anthropology, Recreation
11
T - Technology
10
J - Political Science
6
S - Agriculture
5
F - General American History
3
P - Language and Literature
2
V - Naval Science
1
D - World History
1
N - Fine Arts
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Year of Publication