Potentiometric surface of the Magothy Aquifer in southern Maryland, September 1990 [unknown]

Frederick K. Mack, S.E. Curtin, D.C. Andreasen, J.C. Wheeler
1992 Antarctica A Keystone in a Changing World   unpublished
doi:10.3133/ofr92460 fatcat:utnrggaq6naa3olhhhvrrl6kia