TY - RPRT TI - Simulation of ground-water flow and areas contributing recharge to extraction wells at the Drake Chemical Superfund Site, City of Lock Haven and Castanea Township, Clinton County, Pennsylvania AU - Curtis L. Schreffler PY - 2006 DO - 10.3133/sir20065167 UR - https://pubs.usgs.gov/publication/sir20065167 ID - sir20065167 ER -