Author: Willcox, M.A., 1898.:
Title: Zur Anatomie von Acmaea fragilis Chemnitz [Moll.: Gastrop.].
Description: Jena. Zeitschr. Naturwiss., 32: pp. 411-456, 38 figs. on 3 fold. lithogr. plates, bibliogr. Extract, plain new wrappers.

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