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Institution
Collection
Format
Subject
54
Geology
40
Earthquakes
39
Mines and mineral resources
27
Geology Research
27
Geology, Stratigraphic
24
Water-supply
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22
Paleontology
19
Water quality
18
Groundwater
14
Endangered species
13
Hydrology
13
Hydrology Research
13
Water resources development
12
Water quality management
12
Wetland conservation
11
Geographic information systems
11
Groundwater Pollution
11
Mathematics Study and teaching
11
United States
10
History
10
Water quality Measurement
9
Government publications
9
Pesticides Environmental aspects
9
Riparian ecology
9
Science Study and teaching
9
Stream measurements
9
Wetlands
9
Wildlife conservation
8
Coal
8
Geology, Economic
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Author
366
Geological Survey (U.S.)
36
U.S. Fish and Wildlife Service
23
Stover, Carl W.
16
United States. National Park Service
14
National Center for Education Statistics
14
National Science Foundation (U.S.)
more ...
14
United States. National Oceanic and Atmospheric Administration
13
United States. Congress. Office of Technology Assessment
12
Educational Testing Service
12
U.S. Atomic Energy Commission
11
United States. Bureau of Land Management
11
United States. National Aeronautics and Space Administration
8
Campbell, Marius R. 1858-1940
8
Minsch, J. H.
8
National Institute of Standards and Technology (U.S.)
8
Simon, Ruth B., 1917-
7
United States. Office of Educational Research and Improvement
6
Goddard Space Flight Center
6
National Assessment of Educational Progress (Project)
6
National Water-Quality Assessment Program (U.S.)
6
Person, W. J.
6
Randall, Lois E. 1902-
6
Rocky Mountain Research Station (Fort Collins, Colo.)
5
Averitt, Paul, 1908-1991
5
Chester County Water Resources Authority
5
Eisenhower National Clearinghouse for Mathematics and Science Education
5
Geological Survey (U.S.),
5
Hamilton, Pixie A.
5
United States. Bureau of Land Management. Denver Service Center
5
United States. Federal Emergency Management Agency
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Language
Genre
45
Periodicals
24
Statistics
23
Conference papers and proceedings
23
Maps
22
Bibliographies
20
Handbooks and manuals
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15
Congresses
14
Technical reports
11
Databases
7
Serial publications
6
Directories
5
Classification
5
Literature
5
Topographic maps
3
Illustrated works
3
Observations
2
Academic theses
2
Case studies
2
Geographic information systems
2
Government publications
2
Guidebooks
2
Nomenclature
1
Abstracts
1
Biographies
1
Botanical surveys
1
Catalogs
1
Catalogs and collections
1
Charts, diagrams, etc
1
Chronologies
1
Coloring books
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Literary Form
Era
Region
United States
10
Canada
9
Alaska
8
Kansas
6
Massachusetts
6
Nevada
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6
Pennsylvania
4
Arizona
4
California
4
Chester County
4
Hawaii
4
Ohio
4
Outer space
4
Wyoming
4
Yellowstone National Park
3
Mars (Planet)
3
Maryland
3
Moon
3
New Hampshire
3
Oregon
3
Puerto Rico
2
Atlantic Coast (U.S.)
2
Big Elk Creek Watershed (Pa. and Md.)
2
Cheney Reservoir Watershed
2
Colorado
2
Delaware
2
Europe
2
Florida
2
High Plains (U.S.)
2
High Plains Aquifer
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Call Number
Year of Publication