. Bulletin - Biological Survey. Zoology, Economic. U. S. DEPARTMENT OF AGRICULTURE BIOLOGICAL SURVEY—BULLETIN No. 26 C. HART MERRIAM, Chief DISTRIBUTION AND MIGRATION OF NORTH AMERICAN DUCKS, GEESE, AND SWANS BY WELLS W. COOKE Assistant, Biological Survey. WASHINGTON GOVERNMENT PRINTING OFFICE 1906. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Biological Survey. Washington : Govt. print. off.

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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherwashingtongovtprin