Breeding and wintering areas of canvasbacks harvested in various states and provinces
By: by Aelred D. Geis.
Series: Special scientific report--wildlife ;; no. 185
Publisher: U.S. Dept. of the Interior, Fish and Wildlife Service
Published: 1974
Place of publication: Washington
Language: eng
Number of pages: 78
Subjects: Canvasback.; Bird populations -- North America.
Notes: Includes bibliographical references.