Biodiversity Heritage Library mailto:biodiversitylibrary@gmail.com Mémoires Société entomologique de Belgique. creator text issue Smithsonian Libraries t.20-21 (1912) Bruxelles The Society t.20-21 (1912)
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 ENG Entomology Periodicals QL461 .S68m Société royale d'entomologie de Belgique. Mémoires. v.27-31 https://www.biodiversitylibrary.org/item/40999 2450646 Smithsonian Libraries https://www.biodiversitylibrary.org/item/40999 https://www.biodiversitylibrary.org/pagethumb/10862409 t.20-21 (1912) NOT_IN_COPYRIGHT