Subspeciation, clines and contact zones in the southern Afrotropical avifauna
Clancey, P. A. (Phillip Alexander), 1917-2001
Article
1992
Bulletin of the British Ornithologists' Club
122A
73--86
BioStor
London, British Ornithologists' Club, 1893-
BioStor: https://biostor.org/reference/145756
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