The Laramie flora of the Denver basin
Subtitle: with a review of the Laramie problem
By: by F. H. Knowlton.
Series: U.S. Geological survey. Professional paper l30
Publisher: Govt. print. off.
Published: 1922
Place of publication: Washington
Language: eng
Number of pages: 175
Subjects: Paleobotany.; Geology, Stratigraphic -- Cretaceous.
Notes: At head of title: Department of the interior.