TY  - RPRT
TI  - Water resources data, Pennsylvania, water year 1981. Volume 3: Ohio River and St. Lawrence River basins
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1982
DO  - 10.3133/wdrpa813
UR  - https://pubs.usgs.gov/publication/wdrPA813
ID  - wdrPA813
ER  -