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-75-537 Publication Date: 1975 Map Scale: 1:24,000 Cross Section: None North 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)
Links and Downloads: View the publication from the USGS Publications Warehouse
Publication Format:Digital and Paper
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