Title: Preliminary geologic map, District of Columbia
Author(s): Froelich, A.J., and Hack, J.T.
Publishing Organization: U.S. Geological Survey Series and Number: Open-File Report OF-75-537Publication Date: 1975Map Scale: 1:24,000Cross Section: NoneNorth Latitude: 38° 59' 46" N (38.9960)South Latitude: 38° 47' 30" N (38.7917)East Longitude: 76° 54' 50" W (-76.9140)West Longitude: 77° 7' 1" W (-77.1170)
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Publication Format: Digital and Paper
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