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Baseline assessment of groundwater quality in Pike County, Pennsylvania, 2015 [研究报告]
10.3133/sir20175110U.S. Geological Survey. 2017-01-01
Senior, Lisa A. lasenior@usgs.gov;  Cravotta, Charles A. III cravotta@usgs.gov
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Baseline assessment of groundwater quality in Wayne County, Pennsylvania, 2014 [研究报告]
10.3133/sir20165073U.S. Geological Survey. 2016-01-01
Senior, Lisa A. lasenior@usgs.gov;  Cravotta, III, Charles A. cravotta@usgs.gov;  Sloto, Ronald A. rasloto@usgs.gov
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Naturally occurring contaminants in the Piedmont and Blue Ridge crystalline-rock aquifers and Piedmont Early Mesozoic basin siliciclastic-rock aquifers, eastern United States, 1994???2008 [研究报告]
U.S. Geological Survey. 2013-01-01
Chapman, Melinda J. mjchap@usgs.gov;  Cravotta, Charles A. III cravotta@usgs.gov;  Szabo, Zoltan zszabo@usgs.gov;  Lindsay, Bruce D.
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Contributions of Phosphorus from Groundwater to Streams in the Piedmont, Blue Ridge, and Valley and Ridge Physiographic Provinces, Eastern United States [研究报告]
U.S. Geological Survey. 2011-01-01
Denver, Judith M. jmdenver@usgs.gov;  Cravotta, Charles A. III cravotta@usgs.gov;  Ator, Scott W. swator@usgs.gov;  Lindsey, Bruce D. blindsey@usgs.gov
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