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Dyas oder die Zechsteinformation und das Rothliegende Page XVII Contents to Heft p. XVIIXVIII BHL. Dyas oder die Zechsteinformation und das Rothliegende Permische formation zum theil von Hanns Bruno Geinitz Page XVII Contents to Heft XVIIXVIII Table of Contents text lacking plates biodiversitylibrary org title Geinitz Hanns