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Institution
Collection
Subject
235
Geology
106
Mines and mineral resources
98
Water quality
92
Geology, Stratigraphic
80
Colorado
55
Groundwater
more ...
37
Water-supply
34
Hydrology
33
Oil-shales
33
Wilderness areas
31
Ore deposits
31
Waste minimization Research
27
Petrology
27
Public lands
27
Uranium ores
26
Colorado Antiquities
26
Water resources development
23
Coal
23
National parks and reserves
23
Water Pollution
22
Conservation of natural resources
22
Forest management
22
Paleontology
22
Stream measurements
21
Indians of North America Antiquities
20
Land use
19
Colorado Population
19
Forest reserves
18
Groundwater Quality
18
Soils
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Author
442
Geological Survey (U.S.)
85
United States. Forest Service
83
United States. Bureau of Land Management
54
United States. National Park Service
51
United States. Bureau of Mines
43
U.S. Atomic Energy Commission
more ...
33
U.S. Fish and Wildlife Service
31
Risk Reduction Engineering Laboratory (U.S.)
29
United States. Soil Conservation Service
27
United States. Bureau of the Census
26
Colorado Water Conservation Board
25
United States. Bureau of Land Management. Colorado State Office
23
Looby, Gwen P.
23
United States. Bureau of Reclamation
16
Butler, David L. 1946-
16
Edwards, Harry W. 1939-
15
Colorado Agricultural Experiment Station
15
Kirsch, F. William
15
United States. Environmental Protection Agency
14
Colorado River Water Conservation District (Colo.)
14
Geological Survey (U.S.),
14
Rocky Mountain Research Station (Fort Collins, Colo.)
14
United States. Department of Energy
14
United States. Forest Service. Rocky Mountain Region
13
Kostrzewa, Michael F.
12
National Water-Quality Assessment Program (U.S.)
11
Ortiz, Roderick F.
10
Edelmann, Patrick
10
Elliott, John G. 1951-
10
Metro Wastewater Reclamation District (Colo.)
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Genre
47
Statistics
21
Census data
16
Maps
14
Handbooks and manuals
12
Technical reports
8
Bibliographies
more ...
7
Census, 1980
7
Guidebooks
4
Environmental impact statements
3
Census, 1970
3
Conference papers and proceedings
3
Gazetteers
3
Tours
2
Academic theses
2
Case studies
2
Census, 1960
2
Census, 1990
2
Congresses
2
Reference works
1
Catalogs
1
Census, 2000
1
Census, 2010
1
Databases
1
Directories
1
Illustrated works
1
Literature
1
Registers (Lists)
1
Surveys
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Literary Form
Era
24
Cretaceous
16
Precambrian
14
Tertiary
10
Eocene
8
Pennsylvanian
7
Triassic
more ...
6
Jurassic
6
Paleozoic
6
Permian
5
Quaternary
4
Oligocene
3
Cenozoic
3
Devonian
3
Pleistocene
2
Holocene
2
Mesozoic
2
Miocene
2
Mississippian
1
1809-1865
1
19th century
1
20th century
1
Carboniferous
1
Paleocene
1
Paleogene
1
Pliocene
1
Silurian
1
To 1848
1
To 1876
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Region
Colorado
81
Utah
50
United States
38
Wyoming
34
New Mexico
22
Denver
more ...
20
Denver Region
19
Boulder County
17
Gunnison County
17
Jefferson County
17
Park County
17
Piceance Creek Basin
16
Rocky Mountain National Park (Colo.)
15
Colorado River Watershed (Colo.-Mexico)
15
Montana
15
Rocky Mountain National Park
14
Clear Creek County
14
Moffat County
13
Mesa County
13
San Juan County
12
Arizona
12
Piceance Creek Watershed
12
San Juan National Forest
11
Curecanti National Recreation Area (Colo.)
11
Leadville
10
Arapaho National Forest (Colo.)
10
Mesa Verde National Park (Colo.)
10
Rio Blanco County
10
Rio Grande National Forest
10
San Juan National Forest (Colo.)
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Call Number
381
Q - Science
172
T - Technology
138
A - General Works
101
G - Geography, Anthropology, Recreation
74
E - United States History
43
H - Social Science
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39
S - Agriculture
30
F - General American History
21
D - World History
18
C - Historical Sciences
6
V - Naval Science
3
K - Law
2
J - Political Science
2
L - Education
2
U - Military Science
1
N - Fine Arts
1
R - Medicine
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Year of Publication