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the Ducks, Geese and Swans of North America
the Ducks Geese and Swans of North America Author:F.H. Kortright Using full color and more than 200 line illustrations, one of Canada's most renowned ornithologists presents to sportsman and professional conservationists an easy to understand and to use look at all of the ducks, geese and swans found in the U.S. and Canada.