Food habits of seven species of American shoal-water ducks
By: by Douglas C. Mabbott
Series: Bulletin / United States Department of Agriculture -- no. 862; Bulletin of the U.S. Department of Agriculture -- no. 862.
Publisher: U.S. Dept. of Agriculture
Published: 1920
Place of publication: Washington, D.C
Language: eng
Number of pages: 67
Subjects: Ducks; Feeding and feeds
Notes: Cover title.

Contribution from the Bureau of Biological Survey.

"Professional paper."

Includes bibliographical references.