TY  - RPRT
TI  - Preliminary map showing the difference between the potentiometric surfaces of the Aquia aquifer of April 1979 and September 1982 in southern Maryland
AU  - F. K. Mack
AU  - J. C. Wheeler
AU  - S. E. Curtin
PY  - 1984
DO  - 10.3133/ofr83930
UR  - https://pubs.usgs.gov/publication/ofr83930
ID  - ofr83930
ER  -