Geologic Map of the Lower Marlboro Quadrangle, Prince Georges and Calvert Counties, Maryland
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U.S. Geological Survey (1988)This series of orthophoto quadrangles covers the Chesapeake Bay area of Maryland, including the tidal reaches of the major bay tributaries. The source documents were produced by the U.S. Geological Survey from 1988-1989 ...
U.S. Geological Survey (1898)
Geologic map of Benedict quadrangle, Calvert, Prince George's, Charles and St. Mary's counties, Maryland Glaser, John D. (Baltimore : Maryland Geological Survey, 2002)1 map : colored ; 58 x 46 cm. on sheet 90 x 92 cm. Scale 1:24,000