TY - RPRT TI - Hydrogeology and Ground-Water Flow in the Opequon Creek Watershed area, Virginia and West Virginia AU - Mark D. Kozar AU - David J. Weary PY - 2009 DO - 10.3133/sir20095153 UR - https://pubs.usgs.gov/publication/sir20095153 ID - sir20095153 ER -