Papers in the Biological Sciences
Waterfowl of North America, Revised Edition (2010) by Paul A. Johnsgard
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Date of this Version
2010
Document Type
Supplemental Material
Abstract
Excluding extralimital species and most subspecies unless these are sometimes considered full species.
Aix [through] Spatula
Comments
From Waterfowl of North America, Revised Edition (2010). Copyright © 2010 Paul A. Johnsgard.