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Institution
Collection
Format
Subject
2
Groundwater
2
Water Pollution
2
Water quality
1
Agricultural pollution
1
Chickies Creek Watershed (Pa.)
1
Geomagnetism
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1
Gravity Measurement
1
Herbicides Environmental aspects
1
Hydrogeology
1
Mill Creek Watershed (Lancaster County, Pa.)
1
Mine examination
1
Muddy Run Watershed (Lancaster County, Pa.)
1
Nonpoint source pollution
1
Nutrient pollution of water
1
Ore-dressing
1
Quartzite
1
Sand, Foundry
1
Silicate industry
1
Stream conservation
1
Streamflow
1
Triazines
1
Watersheds
1
Zinc mines and mining
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Author
7
Geological Survey (U.S.)
2
Koerkle, Edward H.
2
Mosier, McHenry
2
Pennsylvania. Department of Environmental Protection
2
Reed, Lloyd A.
2
Susquehanna River Basin Commission
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1
Cecil, L. DeWayne
1
Galeone, Daniel G.
1
Gerhart, James M.
1
Harris, A. T.
1
Langland, Michael J.
1
Lazorchick, George J.
1
McIntosh, F. K.
1
Millar, W. T.
1
Millcreek (Lebanon County, Pa. : Township)
1
Takita, Charles S.
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