Fossil wood and lignite of the Potomac formation /

Bibliographic Details
Main Author:	Knowlton, Frank Hall, 1860-1926 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : Department of the Interior, United States Geological Survey, 1889.
Series:	Bulletin of the United States Geological Survey ; no. 56.
Subjects:	Lignite. Paleobotany > Cretaceous. Paleobotany > United States. Cretaceous Geologic Period. Paleobotany. United States. From 65 to 140 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo57645

Available Online