TY  - RPRT
TI  - Water resources data, Pennsylvania, water year 1991. Volume 2. Susquehanna and Potomac River Basins
AU  - R.R. Durlin
AU  - W.P. Schaffstall
PY  - 1992
DO  - 10.3133/wdrpa912
UR  - https://pubs.usgs.gov/publication/wdrPA912
ID  - wdrPA912
ER  -