Characters of two new Parrots in the Society's Collection (Psittacus augustus, and Ps. Guildingii, Vig.)
Vigors, N. A. (Nicholas Aylward), 1785-1840
Article
1836
Proceedings of the Zoological Society of London
4
79--80
BHL Australia
London Academic Press, [etc.] 1833-1965
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