Top flight speed index to waterfowl of North America
By: co-artists and authors, John A. Ruthven, William Zimmerman.
Contributors: Zimmerman, William, joint author.
Edition: 7th ed.
Publisher: Crown; distributed by Scribner
Published: 1976
Place of publication: Milwaukee; New York
Language: eng
Number of pages: 112
Subjects: Waterfowl -- North America -- Identification.; Birds -- North America.