Distribution of the black duck
By: by Robert E. Stewart.
Contributors: U.S. Fish and Wildlife Service.
Series: Circular -- no. 51; Circular (U.S. Fish and Wildlife Service) -- 51
Publisher: Fish and Wildlife Service, U.S. Dept. of the Interior
Published: 1958
Place of publication: Washington
Language: eng
Subjects: Black duck.
Notes: Includes bibliographical references (p. 8).