9. NOTES ON THE GENERA AND SPECIES OF CYPSELIDae
Sclater, Philip Lutley, 1829-1913
Article
1865
Proceedings of the Zoological Society of London
593--617
BioStor
English
London Academic Press, [etc.] 1833-1965
BioStor: https://biostor.org/reference/109147 DOI: https://doi.org/10.1111/j.1469-7998.1865.tb02388.x