TY  - RPRT
TI  - The difference between the potentiometric surfaces of the Aquia Aquifer of September 1986 and September 1988 in southern Maryland
AU  - Frederick K. Mack
AU  - David C. Andreasen
AU  - Stephen E. Curtin
AU  - Judith C. Wheeler
PY  - 1990
DO  - 10.3133/wri904039
UR  - https://pubs.usgs.gov/publication/wri904039
ID  - wri904039
ER  -