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Commentatio ad quaestionem Plate II . TAB IJ Jh lyg n' itfi Srinn tcLtifdrn Plate II Illustration biodiversitylibrary org title Ledeboer Paulus Jacobus Van Altena Hector Livius Biodiversity Heritage Library Commentatio ad quaestionem Amphibians Anatomy Harvard University MCZ Ernst Mayr Library bhl page dc identifier