TAXONOMIC STATUS OF THE SWORD-BILLED HUMMINGBIRD ENSIFERA-ENSIFERA-CAERULESCENS
Graves, Gary R
Article
1991
Bulletin of the British Ornithologists' Club
111
139--140
BioStor
English
London, British Ornithologists' Club, 1893-
BioStor: https://biostor.org/reference/112243
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