Thickness of overburden map of Montgomery County, Maryland /

Bibliographic Details
Main Author:	Froelich, A. J. (Albert Joseph), 1929-
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey, 1975.
Series:	Miscellaneous investigations series (Geological Survey (U.S.)) ; map I-920-B.
Subjects:	Geology > Maryland > Montgomery County > Maps.

Description
Item Description:	Relief shown by contours and spot heights. "Contour interval 20 feet." Includes text, location map, and 2 cross-sections. Cartographic material.
Physical Description:	1 map : color ; 83 x 94 cm., folded in envelope 30 x 24 cm.
Bibliography:	Includes bibliographical references.