TY - RPRT TI - Water Resources Data, Pennsylvania, Water Year 2001, Volume 2. Susquehanna and Potomac River Basins AU - R.R. Durlin AU - W.P. Schaffstall PY - 2001 DO - 10.3133/wdrpa012 UR - https://pubs.usgs.gov/publication/wdrPA012 ID - wdrPA012 ER -