TY  - RPRT
TI  - Potentiometric surface of the upper Patapsco aquifer in southern Maryland, September 1997
AU  - Stephen E. Curtin
AU  - David C. Andreasen
AU  - Frederick K. Mack
PY  - 1999
DO  - 10.3133/ofr9985
UR  - https://pubs.usgs.gov/publication/ofr9985
ID  - ofr9985
ER  -