The pygmy honey-guide, Indicator pumilio Chapin in East Africa
Williams, John G. (John George), 1913-1997 Friedmann, Herbert 1900-1987
Article
1965
Bulletin of the British Ornithologists' Club
85
21--22
BioStor
London, British Ornithologists' Club, 1893-
BioStor: https://biostor.org/reference/112953