Yoshida, S. (1958). The Foraminiferal Fauna of the Upper Cretaceous Hamanaka and Kiritappu Formations of Eastern Hokkaido, Japan. Journal of Hokkaido Gakugei University. 9(1): 250-264.
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Yoshida, S.
1958
The Foraminiferal Fauna of the Upper Cretaceous Hamanaka and Kiritappu Formations of Eastern Hokkaido, Japan