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Keywords from Image Description:
Anatomie der Echinothuriden Tafel II . FaM dtl Sper l'srlaayfMiustav Fischer ktvi Tafel II Illustration biodiversitylibrary org title Schurig Walther Biodiversity Heritage Library Anatomie der Echinothuriden Anatomy Echinothuroida Sea urchins Smithsonian Institution Libraries bhl page dc identifier org smithsonian institution