A NEW DOWNY PTERYLA IN PASSERINE BIRDS
Ilʹi︠a︡shenko, V. I︠U︡. (Valentin I︠U︡rʹevich)
Article
1984
Bulletin of the British Ornithologists' Club
104
53--54
BioStor
English
London, British Ornithologists' Club, 1893-
BioStor: https://biostor.org/reference/112438
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