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Keywords from Image Description:
Systme silurien du centre de la Bohme Pl. . Barrande oyst ilur de hm Vol PI Tr'agi Ant PoUcr dSat ftezu iith Wien Lilh jfr Jr lluC SUal Jn Pl Illustration biodiversitylibrary org title Barrande Joachim Perner Jaroslav Pota Felip Waagen Wilhelm Heinrich Biodiversity Heritage Library National Fossil Day Systme silurien