An Analysis of Aerial Waterfowl Production Surveys in Alaska Henry A. Hansen Published: 1962* Total Pages: 8 Get eBook
Alaska Waterfowl Production Survey, 1966, July 14-24, 1966 James G. King Published: 1966 Total Pages: 8 Get eBook
Technical presentations, Section A-B. 2v.-v.2.Summary of results.-v.3.Discipline summary reports Stanley C. Freden Published: 1973 Total Pages: 916 Get eBook
Administrative Report U.S. Fish and Wildlife Service. Office of Migratory Bird Management Published: 1973 Total Pages: Get eBook
Aerial Surveys of Waterfowl Production in North America, 1955-71 Charles J. Henny Published: 1972 Total Pages: 56 Get eBook