TY  - RPRT
TI  - The difference between the potentiometric surfaces of the lower Patapsco aquifer in southern Maryland, September 1990 and September 2007
AU  - Stephen E. Curtin
AU  - David C. Andreasen
AU  - Andrew W. Staley
PY  - 2009
DO  - 10.3133/ofr20091087
UR  - https://pubs.usgs.gov/publication/ofr20091087
ID  - ofr20091087
ER  -