Geologic map of the Porcupine Valley quadrangle, Valley County, Montana /

Bibliographic Details
Main Author:	Colton, Roger B. (Roger Burnham), 1924-
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Map
Language:	English
Published:	Washington : U.S. Dept. of the Interior, Geological survey, 1963.
Series:	Miscellaneous geologic investigations ; map I-368.
Subjects:	Geology > Montana > Valley County > Maps.

Description
Item Description:	"Prepared as a part of the Department of Interior program for development of the Missouri River basin." Cartographic material.
Physical Description:	1 map : color ; on sheet 63 x 84 cm. in folder 30 x 24 cm.