The taxonomy and relationships of the northern swans

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Paul A Johnsgard

Abstract

The taxonomy and relationships of the northern swans: Whooper Swan; Trumpeter Swan; Whistling Swan; and Bewick's Swan.

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How to Cite
Johnsgard, P. A. (1974). The taxonomy and relationships of the northern swans. Wildfowl, 155–162. Retrieved from https://tidsskrift.dk/Wildfowl/article/view/155896
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