Fossil plants from the Aspen shale of southwestern Wyoming/

Main Author: Brown, Roland Wilbur, 1839-1961
Format: Book
Language:English
Published: Washington: United States National Museum, 1933
Subjects:
Item Description:Reprint from: The Proceedings of the United States National Museum, vol. 82, art. 12
Physical Description:10 p. : ill., pl. ; 23 cm.