The normal breeding season and gestation period of martens
By: by Frank G. Ashbrook and Karl B. Hanson
Contributors: Hanson, Karl B. (Karl Burchard), 1893-
Series: Circular / United States Department of Agriculture -- no. 107; Circular (United States. Dept. of Agriculture) -- no. 107.
Publisher: U.S. Dept. of Agriculture
Published: 1930
Place of publication: Washington, D.C
Language: eng
Subjects: Breeding; Martens
Notes: Caption title.

"Contribution from Bureau of Biological Survey."

Includes bibliographical references.