Origin and microfossils of the oil shale of the Green River formation of Colorado and Utah
By: by Wilmot H. Bradley.
Series: U. S.  Geological Survey.  Professional paper 168
Publisher: U.S. Govt. Print. Off.
Published: 1931
Place of publication: Washington
Language: eng
Number of pages: 58
Subjects: Oil-shales.; Paleontology -- Colorado.; Paleontology -- Utah.; Micropaleontology -- Colorado.; Micropaleontology -- Utah.
Other titles: Green River formation of Colorado and Utah, Origin and microfossils of the oil shale of the.
Notes: Bibliographical foot-notes.
At head of title: United States Department of the Interior.