A taxonomic revision of the New World Moth Genus Pero, Lepidoptera : Geometridae
Poole, Robert
A taxonomic revision of the New World Moth Genus Pero, Lepidoptera : Geometridae - Washington, D.C : United states department of agriculture-Agricultural research service, 1987 - 257 p: : ill. - Technical bulletin, 1698 .
A taxonomic revision of the New World Moth Genus Pero, Lepidoptera : Geometridae - Washington, D.C : United states department of agriculture-Agricultural research service, 1987 - 257 p: : ill. - Technical bulletin, 1698 .