TY  - RPRT
TI  - Map showing how the potentiometric surface of the Magothy Aquifer of September 1979 differed from the potentiometric surface of September 1977 in southern Maryland
AU  - Frederick K. Mack
AU  - J. C. Wheeler
AU  - Stephen E. Curtin
PY  - 1981
DO  - 10.3133/ofr81632
UR  - https://pubs.usgs.gov/publication/ofr81632
ID  - ofr81632
ER  -