On Butterflies of the Genus Parnassius
Elwes, Henry John, 1846-1922
Article
1887
Entomologische Zeitung
48
22--41
BioStor
German
[Stettin Entomologischer Verein zu Stettin 1840-1911]
BioStor: https://biostor.org/reference/195949
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