Forum on Geologic Mapping Applications in the Washington-Baltimore Urban Area : proceedings, Reston, Virginia, April 23, 1997 - Forum on Geologic Mapping Applications in the Washington-Baltimore Urban Area (1997 : Reston, Va.); Horton, J. Wright; Cleaves, Emery T.; U.S. Geological Survey; Maryland Geological Survey (Washington : U.S. G.P.O. ; Denver, CO : Free on application to the U.S. Geological Survey, Information Services, 1997)
'Sponsored by the U.S. Geological Survey and the Maryland Geological Survey.'
Includes bibliographical references.
Keywords: Geological mapping -- Washington (D.C.) Region -- Congresses; Geological mapping -- Maryland -- Baltimore Region -- Congresses