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Institution
Collection
Format
Subject
14
Geology
12
Groundwater
11
Geomagnetism
10
Hydrogeology
10
Water quality
9
Magnetic anomalies
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8
Groundwater Pollution
7
Groundwater flow
6
Anthracite coal
6
Hydrology
5
Aquifers
5
Coal Geology
5
Water-supply
4
Geophysical well logging
4
Nutrient pollution of water
3
Atmospheric radioactivity
3
Baseball History
3
Pennsylvania
3
Stream measurements
3
Streamflow
2
Agricultural pollution
2
Allegheny National Forest (Pa.)
2
Bacterial pollution of water
2
Coal
2
Coal mines and mining Environmental aspects
2
Flood control
2
Groundwater Quality
2
History
2
Radioactive pollution of water
2
Recreation areas
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Author
59
Geological Survey (U.S.)
15
Geological Survey (U.S.),
11
Pennsylvania. Bureau of Topographic and Geologic Survey
10
Bromery, Randolph W. 1926-2013
10
Zandle, Gerald L.
8
United States. Environmental Protection Agency
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6
Pennsylvania. Department of Environmental Protection
4
Chester County Water Resources Authority
4
Sloto, Ronald A.
4
Susquehanna River Basin Commission
3
Henderson, John R.
3
Herb, William J.
3
Lash, Gary George
3
Low, Dennis J.
3
Reed, Lloyd A.
3
Rothrock, Howard E. 1893-1983
3
Senior, Lisa A.
3
Williams and Heintz Map Corporation
2
Bennett, Bruce L. 1917-2003
2
Bird, Philip H.
2
Boynton, G. R. 1935-
2
Brown, Deborah E.
2
Conger, Randall W.
2
Danilchik, Walter
2
Delaware River Basin Commission
2
Drake, Avery Ala, 1927-
2
Epstein, Jack Burton, 1935-
2
Erie County (Pa.). Department of Health
2
Geological Survey (U.S.). Water Resources Division
2
Gerhart, James M.
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Language
Literary Form
Region
Pennsylvania
7
Chester County
7
Schuylkill County
6
Philadelphia
5
Lancaster County
5
United States
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4
Berks County
4
Bucks County
4
Maryland
4
New Jersey
3
Lehigh County
3
Montgomery County
3
Pittsburgh
2
Allegheny National Forest
2
Allegheny National Forest (Pa.)
2
Conestoga River Watershed
2
Delaware County
2
Erie County
2
Lansdale
2
New York (State)
2
Northampton County
2
Northumberland County
2
Somerset County
2
Warren County
1
Adams County
1
Appalachian Mountains
1
Cambria County
1
Carbon County
1
Carroll Valley
1
Centre County
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Call Number
Year of Publication