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Institution
Collection
Format
Subject
15
Mathematics Study and teaching
13
History
12
Mathematicians
11
Climatic changes
10
Science Study and teaching
9
Physicists
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8
Water quality
7
Astronomers
7
Climatic changes Government policy
7
Mathematics Study and teaching (Middle school)
7
Science and state
7
Wildlife conservation
6
Geographic information systems
6
Mathematics Study and teaching Evaluation
6
Water-supply
6
Wetland conservation
5
Computer security
5
Conservation of natural resources
5
Engineering Study and teaching
5
Groundwater Pollution
5
Groundwater Quality
5
Multicultural education
5
Pesticides Environmental aspects
5
Stream measurements
5
Technology Study and teaching
5
Water quality biological assessment
5
Wetlands
4
Astronomy History
4
Computer networks Security measures
4
Curriculum planning
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Author
87
Geological Survey (U.S.)
53
EBSCOhost
42
SpringerLink (Online Service)
31
SpringerLink (Online service)
26
Geological Survey (U.S.),
24
ScienceDirect (Online service)
more ...
10
Oxford Scholarship Online
5
Chester County Water Resources Authority
5
Hamilton, Pixie A.
5
National Research Council (U.S.)
5
National Research Council (U.S.). Mathematical Sciences Education Board
4
National Institute of Standards and Technology (U.S.)
4
ProQuest (Firm)
4
Reif, Andrew G.
4
Romberg, Thomas A.
3
American Meteorological Society
3
Center for Science, Mathematics, and Engineering Education
3
Committee on Science, Engineering, and Public Policy (U.S.)
3
Committee on Science, Engineering, and Public Policy (U.S.),
3
Ebooks Corporation
3
Florida International University
3
Institute of Medicine (U.S.). Committee on Military Nutrition Research
3
National Audubon Society
3
National Research Council (U.S.). Board on Mathematical Sciences
3
Reed, Bruce Cameron,
3
Superfund Innovative Technology Evaluation Program (U.S.)
3
U.S. Fish and Wildlife Service,
3
United States. National Aeronautics and Space Administration
3
United States. National Bureau of Standards
3
University of Miami
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Genre
38
Biographies
21
Conference papers and proceedings
11
Autobiographies
9
Technical reports
7
Electronic government information
5
Case studies
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5
Maps
4
Festschriften
3
Bibliographies
3
Handbooks and manuals
2
Databases
2
Electronic books
2
Interviews
1
Catalogs
1
Comics (Graphic works)
1
Congresses
1
Cross-cultural studies
1
Diaries
1
Dictionaries
1
Directories
1
Encyclopedias
1
Environmental impact statements
1
Geographic information systems
1
Government publications
1
Graphic novels
1
Guidebooks
1
Illustrated works
1
Patents
1
Personal narratives
1
Popular works
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Literary Form
Era
9
20th century
3
19th century
2
1891-1972
2
1899-1986
2
1900-1973
1
-1985
more ...
1
1770-1838
1
1774-1809
1
1820-1888
1
1820-1913
1
1838-1914
1
1838-1923
1
1857-1923
1
1865-1918
1
1870-1922
1
1876-1956
1
1884-1975
1
1886-1948
1
1887-1920
1
1889-1953
1
1894-1964
1
1901-1954
1
1903-1957
1
1904-2005
1
1906-2004
1
1908-2001
1
1910-1989
1
1911-1963
1
1912-1988
1
1912-2000
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Region
United States
6
Kansas
6
Pennsylvania
5
California
5
Massachusetts
5
Outer space
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4
Alaska
4
Canada
4
Chester County
3
Germany
3
Japan
3
New Hampshire
3
Wyoming
2
Big Elk Creek Watershed (Pa. and Md.)
2
Cheney Reservoir Watershed
2
Delaware
2
Maryland
2
Nevada
2
North America
2
South Dakota
2
Utah
2
Wisconsin
1
Antarctica
1
Appalachian Region
1
Arctic regions
1
Arizona
1
Asia
1
Assabet River Watershed
1
Australia
1
Austria
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Call Number
Year of Publication