Population characteristics and simulation modeling of black ducks /
Blandin, Warren Wayne,1936-1982.
Washington, DC : U.S. Department of the Interior, Fish and Wildlife Service,
1992.
Includes the entire, unedited text of the author's 1982 Ph. D. thesis, Clark University, Worcester, Mass., plus additional text and updated bibliography by other authors.
Includes bibliographies.
Black duck
Duck shooting
Bird populations