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Institution
Collection
Format
Subject
50
Geomagnetism
46
Geology
9
Magnetic anomalies
9
Pennsylvania
6
Groundwater
5
Allegheny County (Pa.)
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5
Anthracite coal
5
Coal Geology
4
Aquifers
4
Atmospheric radioactivity
4
New York (State)
4
Water table
3
Landslides
3
Radioactivity Measurement
3
West Virginia
2
Coal mines and mining
2
Pittsburgh Region (Pa.)
2
Subsidences (Earth movements)
1
Allegheny County (Pa.) Climate
1
Armstrong County (Pa.)
1
Beaver County (Pa.)
1
Butler County (Pa.)
1
Coal
1
Earthquakes
1
Floods
1
Geology, Stratigraphic
1
Groundwater flow
1
Hydrology
1
Maryland
1
Midway Quadrangle (Pa.)
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Author
Geological Survey (U.S.)
49
Bromery, Randolph W. 1926-2013
46
Zandle, Gerald L.
16
Wood, Gordon H. 1919-
7
Appalachian Regional Commission
7
Drake, Avery Ala, 1927-
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7
Henderson, John R.
6
Arndt, Harold H.
6
Epstein, Jack Burton, 1935-
5
Kent, Bion H. 1925-
5
Pennsylvania. Bureau of Topographic and Geologic Survey
5
Trexler, J. Peter, 1926-
4
Bennett, Bruce L. 1917-2003
4
Briggs, Reginald P., 1929-2009
4
Roen, John B.
3
Boynton, G. R. 1935-
3
Chester County Water Resources Authority
3
Danilchik, Walter
3
Kehn, Thomas M.
3
McManus, B. Craig
3
Pittillo, D. R.
3
United States. Defense Mapping Agency. Hydrographic/Topographic Center
2
Berryhill, Henry L., Jr. 1921-2013
2
Bushnell, Kent O.
2
Kohl, William R.
2
Lash, Gary George
2
Lyttle, Peter T.
2
Minard, James P.
2
New Hope (Pa.)
2
Owens, James Patrick, 1924-
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Language
Region
Pennsylvania
19
Schuylkill County
15
Berks County
12
Bucks County
12
Lancaster County
12
New Jersey
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11
York County
10
Lebanon County
9
Lehigh County
9
Northumberland County
8
Allegheny County
8
Montgomery County
7
Dauphin County
7
Washington County
6
Adams County
6
Allegheny County (Pa.)
6
Northampton County
5
Chester County
5
Cumberland County
5
New York (State)
4
Columbia County
4
Greene County
4
Monroe County
3
Carbon County
3
West Virginia
2
Delaware
2
Delaware County
2
Hunterdon County
2
Maryland
2
Pittsburgh Region
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Year of Publication