Search Results - Siwiec, Steven F.

Plan to evaluate the effects of hydrogeologic conditions and human activities on water quality in the coastal plain of New York and New Jersey / by Vowinkel, Eric F., Siwiec, Steven F.

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Evaluation of statistical models to predict chemical quality of shallow ground water in the Pine Barrens of Suffolk County, Long Island, New York / by Stackelberg, Paul E., Siwiec, Steven F.

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Water-quality assessment of the Lower Susquehanna River Basin, Pennsylvania and Maryland : environmental setting / by Risser, Dennis W., Siwiec, Steven F.

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Water-quality assessment of the Lower Susquehanna River Basin, Pennsylvania and Maryland design and implementation of water-quality studies, 1992-95 /

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