Iwasa, S.; Kikuchi, Y. (1954). Foraminifera from the Sugota formation, Akita Prefecture, Japan. Paleontological Society of Japan Transactions and Proceedings new series. n° 16: 183-194.
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Iwasa, S.; Kikuchi, Y.
1954
Foraminifera from the Sugota formation, Akita Prefecture, Japan.
Paleontological Society of Japan Transactions and Proceedings new series