TY  - RPRT
TI  - Water-resources investigations in Pennsylvania; programs and activities of the U.S. Geological Survey, 1990-91
AU  - L.O. McLanahan
PY  - 1991
DO  - 10.3133/ofr91214
UR  - https://pubs.usgs.gov/publication/ofr91214
ID  - ofr91214
ER  -