Ducks at a distance
Subtitle: a waterfowl identification guide
By: by Bob Hines.
Contributors: U.S. Fish and Wildlife Service.
Publisher: Dept. of the Interior, Fish and Wildlife Service ; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1978
Place of publication: [Washington]
Subjects: Ducks -- Identification.; Waterfowl -- Identification.
Other titles: Waterfowl identification guide