TY - RPRT TI - Map showing the difference between the potentiometric surfaces of the Magothy Aquifer of September 1975 and September 1982 in southern Maryland AU - Frederick K. Mack AU - Judith C. Wheeler AU - Stephen E. Curtin PY - 1982 DO - 10.3133/wri834283 UR - https://pubs.usgs.gov/publication/wri834283 ID - wri834283 ER -