Author: Nagao, T., 1932.:
Title: Some Cretaceous Mollusca from Japanese Saghalin and Hokkaido (Lamellibranchiata and Gastropoda).
Description: Jour. Sci. Hokkaido Imp. Univ., Ser. 4, 2(1): pp. 23-50,[8], sveral photos on 4 plates, refs. Plain new wrappers.

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