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Keywords from Image Description:
Lehrbuch der Botanik Taf. . Schmeils Naturwissenschaftliches Unterrichtswerk Birnbaum Pirus communis Taf Illustration biodiversitylibrary org title Schmeil Otto NameFound Pirus communis Biodiversity Heritage Library Lehrbuch der Botanik Botany Gerstein University of Toronto archive org bhl page dc identifier org gerstein