Food habits of the mallard ducks of the United States
By: by W. L. McAtee.
Contributors: United States. Dept. of Agriculture.
Series: Bulletin / United States Department of Agriculture -- no. 720; Bulletin (United States. Dept. of Agriculture) -- no. 7204
Publisher: G.P.O.
Published: 1918
Place of publication: Washington
Language: eng
Number of pages: 36
Subjects: Birds -- Food.
Notes: Cover title.

Includes bibliographical references.