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Keywords from Image Description:
Systme silurien du centre de la Bohme Pl. . ' iclf Syst Silnr Pnfipmp PI Fu lNilionii II tl Vur jiVT lilh ViPH itliiioed il Hct Sln it silniikiMfi Pl Illustration biodiversitylibrary org title Barrande Joachim Perner Jaroslav Pota Felip Waagen Wilhelm Heinrich Biodiversity Heritage Library National Fossil Day Systme