Geologic map of the Roberts Mountain quadrangle, Lewis and Clark County, Montana /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Schmidt, Robert George, Strong, Ceylon P.
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey, 1972.
Series:	Geologic quadrangle map ; GQ-977.
Subjects:	Geology > Montana > Lewis and Clark County > Maps.

Description
Item Description:	Relief shown by contours and spot heights. "Geology mapped in 1965-66." Includes col. cross section, bibliography, index showing quadrangle location, and quadrangle map. Cartographic material.
Physical Description:	1 map : color ; 58 x 40 cm., on sheet 81 x 89 cm., folded in envelope 30 x 24 cm.