Author: Böhm, J., 1901.:
Title: Ueber die Fauna der Pereiros-Schichten.
Description: Zeitschr. Deut. Geol. Ges., 53(2): pp. 211-252,[3], many figs. of gastropod and lamellibranch molluscs on 3 fold. lithogr. plates, 32 figs. in text. Offprint, orig. wrappers. - Rhaetian/Hettangian, Portugal. With author's presentation inscription.

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