TY - RPRT TI - Hydrogeology and water quality of the Catoctin Mountain National Park Area, Frederick County, Maryland AU - T. J. Trombley AU - Linda D. Zynjuk PY - 1985 DO - 10.3133/wri854241 UR - https://pubs.usgs.gov/publication/wri854241 ID - wri854241 ER -