Variation in the white markings of the blackish nightjar Caprimulgus nigrescens
Ingels, Johan Ribot, J-H
Article
1982
Bulletin of the British Ornithologists' Club
102
119--122
BioStor
London, British Ornithologists' Club, 1893-
BioStor: https://biostor.org/reference/112523
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http://creativecommons.org/licenses/by-nc-sa/4.0/
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