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Asano, K.; Nakamura, M. (1937). On the Japanese species of Cassidulina. 日本地質學地理學輯報 - Japanese journal of Geology and Geography. 14: 143-153.
Asano, K.; Nakamura, M. (1937). On the Japanese species of Cassidulina. 日本地質學地理學輯報 - Japanese journal of Geology and Geography. 14: 143-153.