Amano, K. (1984). An Ocurrence of Clinopegma borealis Tiba from the Pliocene Rumoi Formation in the Rumoi Area, Hokkaido, Japan. VENUS (The Japanese Journals of Malacology). 43(1):101-105.
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Amano, K.
1984
An Ocurrence of Clinopegma borealis Tiba from the Pliocene Rumoi Formation in the Rumoi Area, Hokkaido, Japan