Stratigraphy and petrology of the Permian rocks of southwestern Montana
By: by Earle R. Cressman and Roger W. Swanson
Series: Geological Survey (U.S.). Professional paper -- 313-C; Professional paper (Geological Survey (U.S.)) -- 313-C; Geology of Permian rocks in the Western phosphate field
Publisher: U.S. Govt. Print. Off.
Published: 1964
Place of publication: Washington
Language: eng
Number of pages: 569
Subjects: Stratigraphic Geology; Petrology; Geology; Maps
Notes: Accompanied by 12 fold. maps and profiles in portfolio.

"References cited": p. 562-565.
Table of contents: title: [v.1] Text; title: [v.2] Plates.