Species, age, and sex identification of ducks using wing plumage /

Bibliographic Details
Main Author:	Carney, Samuel M.
Corporate Author:	U.S. Fish and Wildlife Service
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Dept. of the Interior, U.S. Fish and Wildlife Service, 1992. [date of publication not identified]
Subjects:	Ducks > Identification. Ducks > Age determination. Ducks > Sexing.

Evans: US Documents (Annex 5th floor)