giant beaver, Castoroides, and the common beaver, castor, in Nebraska
By: by Erwin Hinckley Barbour.
Series: Bulletin / Nebraska State Museum -- v. 1, no. 20; Bulletin (University of Nebraska State Museum) -- v. 1, no. 20.
Publisher: University of Nebraska
Published: 1931
Place of publication: [Lincoln]
Language: eng
Number of pages: 182
Subjects: Beavers, Fossil -- Nebraska; Beavers -- Nebraska
Notes: Caption title.

"June, 1931."