Stratigraphy and petrology of the Permian rocks of southwestern Montana /

Bibliographic Details
Main Authors:	Cressman, Earle Rupert, 1923- (Author), Swanson, Roger Warren, 1914- (Author)
Corporate Author:	U.S. Atomic Energy Commission (sponsoring body.)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1964.
Series:	Geological Survey professional paper ; 313-C.
Subjects:	Geology > Montana. Geology, Stratigraphic > Permian. Petrology > Montana. Geology. Geology, Stratigraphic. Permian Geologic Period. Petrology. Montana. From 230 to 280 million years ago Maps.
Online Access:	https://purl.fdlp.gov/GPO/gpo86470

Description
Item Description:	Title from title screen (viewed September 26, 2014). "Geology of permian rocks in the western phosphate field."
Physical Description:	1 online resource (303 unnumbered pages) : illustrations, maps.
Bibliography:	Includes bibliographical references (pages 562-565) and index.