TY - RPRT TI - The difference between the potentiometric surfaces of the Magothy Aquifer of September 1975 and September 1995 in southern Maryland AU - Stephen E. Curtin AU - David C. Andreasen AU - Frederick K. Mack PY - 1996 DO - 10.3133/ofr96625 UR - https://pubs.usgs.gov/publication/ofr96625 ID - ofr96625 ER -