@misc{indiciaeb0b216ceee2c, title = {Potentiometric Surface of the Lower Patapsco Aquifer in Southern Maryland, September 1995}, author = {Stephen E. Curtin and David C. Andreasen and Frederick K. Mack}, year = {1996}, doi = {10.3133/ofr96623}, url = {https://pubs.usgs.gov/publication/ofr96623}, note = {Source identifier: ofr96623} }