TY  - RPRT
TI  - Altitude and configuration of the potentiometric surface in Springfield Township, Bucks County, Pennsylvania, April 1991 through October 1991
AU  - Curtis L. Schreffler
PY  - 1993
DO  - 10.3133/wri924183
UR  - https://pubs.usgs.gov/publication/wri924183
ID  - wri924183
ER  -