Geologic map index of Montana.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Format:	Map
Language:	English
Published:	[Place of publication not identified] : U.S. Geological Sruvey, 1956.
Subjects:	Geology > Montana > Maps. Montana > Maps. Geology. Montana. Maps. Index maps.

Description
Item Description:	"Reprinted 1956." Cartographic material.
Physical Description:	1 map : color ; 73 x 126 cm