Fossil forests of the Yellowstone national park.
Subtitle: Department of the interior. Office of the secretary.
Publisher: Govt. Print. Off.]
Published: 1914
Place of publication: [Washington
Language: eng
Number of pages: 31
Subjects: Petrified forests.; Paleobotany -- Yellowstone National Park.
Notes: By F. H. Knowlton, United States Geological Survey.