From Field and Study: Plumage Variation in the Willy Wagtail
Calderwood, Donald N.
Article
1952-06-20
The Western Australian Naturalist
3
Issue: 5
116--116
BioStor
Nedlands, W.A, Western Australian Naturalists' Club, 1947
BioStor: https://biostor.org/reference/264625
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