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.
Published 1991

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.
Published 1993

Water-quality assessment of the Lower Susquehanna River Basin, Pennsylvania and Maryland : environmental setting /

by Risser, Dennis W., Siwiec, Steven F.
Published 1996

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

Published 1997