TY - RPRT TI - Water resources data for Pennsylvania, water year 1979; Volume 1, Delaware River basin AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1980 DO - 10.3133/wdrpa791 UR - https://pubs.usgs.gov/publication/wdrPA791 ID - wdrPA791 ER -