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Institution
Collection
Format
Subject
Water quality
6
Nutrient pollution of water
4
Agriculture Environmental aspects
3
Groundwater
2
Fertilizers Environmental aspects
2
Groundwater Quality
more ...
2
Hydrogeology
2
Hydrology
2
Stream measurements
2
Strip mining Environmental aspects
2
Water quality management
2
Water resources development
1
Acid pollution of rivers, lakes, etc
1
Acid precipitation (Meteorology) Environmental aspects
1
Agricultural chemicals Environmental aspects
1
Agricultural pollution
1
Aquatic biology
1
Aquifers
1
Carbonate rocks
1
Coal mines and mining Environmental aspects
1
Groundwater flow
1
Groundwater flow Measurement
1
Hydrogeological surveys
1
Land use Environmental aspects
1
Mill Creek Watershed (Lancaster County, Pa.)
1
Muddy Run Watershed (Lancaster County, Pa.)
1
Plant nutrients Environmental aspects
1
Sediment transport
1
Solvent wastes Recycling
1
Stream conservation
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Author
31
Geological Survey (U.S.)
7
Pennsylvania. Department of Environmental Protection
6
Fishel, David K.
4
Barker, James L., 1936-
4
Koerkle, Edward H.
4
Lietman, Patricia L.
more ...
3
Langland, Michael J.
3
Pennsylvania. Department of Environmental Resources
3
Sloto, Ronald A.
3
Susquehanna River Basin Commission
3
Wood, Charles R.
2
Chester County Water Resources Authority
2
Gustafson-Minnich, Linda C.
2
Hainly, Robert A.
2
Hall, David W.
2
Pennsylvania. Bureau of Land and Water Conservation
2
Pennsylvania. Bureau of State Parks
2
United States. Army. Corps of Engineers. Philadelphia District
2
United States. Environmental Protection Agency
1
Becher, Albert E.
1
Bilger, Michael D.
1
Blickwedel, Roy S.
1
Buckwalter, Theodore F.
1
Chesapeake Bay Program (U.S.)
1
Dauphin County Conservation District (Pa.)
1
Erie County (Pa.). Department of Health
1
Galeone, Daniel G.
1
Gleichsner, Richard E.
1
Koerkle, Edward J.
1
Mastrilli, Thomas M.
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Language
Literary Form
Region
Pennsylvania
5
Conestoga River Watershed
3
Chester County
2
Fayette County
2
Lancaster County
2
Susquehanna River, West Branch
more ...
2
Swatara Creek
2
United States
2
York County
1
Adams County
1
Carbon County
1
Dauphin County
1
Erie County
1
Indiana County
1
Lebanon County
1
Luzerne County
1
Mill Creek Watershed (Lancaster County, Pa.)
1
Muddy Run Watershed (Lancaster County, Pa.)
1
Neshaminy Creek Watershed
1
Oley (Township)
1
Philadelphia Metropolitan Area
1
Schuylkill County
1
Somerset County
1
Susquehanna River, West Branch (Pa.)
1
Wayne County
1
Youghiogheny River Valley
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Year of Publication