Yoshida, S. (1958). Miocene foraminifera from the Okawa, Oikamanai and Toberi Formations of the Toyokoro Hill, Tokachi Province, Hokkaido. Journal of Hokkaido Gakugei University. 9: 265-277.
190102
Yoshida, S.
1958
Miocene foraminifera from the Okawa, Oikamanai and Toberi Formations of the Toyokoro Hill, Tokachi Province, Hokkaido