English
[50] pages, [50] leaves of color plates : 30 cm · Issued in parts · Includes indexes · With: Synopsis of North American butterflies / by Wm. H. Edwards. Philadelphia : American Entomological Society, 1872. (v, 52 p., before plates) · Includes bibliography
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Ebook · The butterflies of North America · Philadelphia : American Entomological Society · Internet Archive
Butterflies -- United States · Butterflies -- Canada · Lepidoptera · Butterflies · Lepidoptera · Canada · United States