Hirayama, K. (1954). Miocene Mollusca from the Arakawa Group, Tochigi Prefecture, Japan. (Part 1). Science Reports of the Tokyo Kyoiku Daigaku [Section C - Geology, Mineralogy and Geography], 3(18): 43-75, pls. 3-5.
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Hirayama, K.
1954
Miocene Mollusca from the Arakawa Group, Tochigi Prefecture, Japan. (Part 1)
Science Reports of the Tokyo Kyoiku Daigaku [Section C - Geology, Mineralogy and Geography]