Trends in duck breeding populations, 1955-1990
F.A. Johnson ... [et. al]

APA Citation

Johnson, F. A., U.S. Fish and Wildlife Service. Office of Migratory Bird Management. (1990). Trends in duck breeding populations, 1955-1990. Laurel, MD: Dept. of the Interior, U.S. Fish and Wildlife Service, Office of Migratory Bird Management.

MLA Citation

Johnson, F. A, and U.S. Fish and Wildlife Service. Office of Migratory Bird Management. Trends In Duck Breeding Populations, 1955-1990. Laurel, MD: Dept. of the Interior, U.S. Fish and Wildlife Service, Office of Migratory Bird Management, 1990.