TY  - RPRT
TI  - Water-resources investigations in Pennsylvania; programs and activities of the U.S. Geological Survey, 1993
AU  - L. O. McLanahan
PY  - 1993
DO  - 10.3133/ofr93152
UR  - https://pubs.usgs.gov/publication/ofr93152
ID  - ofr93152
ER  -