Aerial surveys of Canada geese and black ducks in eastern Canada /
by Charles F. Kaczynski and Everett B. Chamberlain.

APA Citation

Kaczynski, C. F., Chamberlain, E. B., United States. Bureau of Sport Fisheries and Wildlife. (1968). Aerial surveys of Canada geese and black ducks in eastern Canada. Washington, D.C.: U.S. Dept. of the Interior, Fish and Wildlife Service, Bureau of Sport Fisheries and Wildlife .

MLA Citation

Kaczynski, Charles F, Everett B Chamberlain, and United States. Bureau of Sport Fisheries and Wildlife. Aerial Surveys of Canada Geese And Black Ducks In Eastern Canada. Washington, D.C.: U.S. Dept. of the Interior, Fish and Wildlife Service, Bureau of Sport Fisheries and Wildlife , 1968.