Yabe, H.; Hanzawa, S. (1926). Geological age of Orbitolina bearing rocks of Japan. The science reports of the Tohoku University. Second series, Geology. 9(1), 13-A12.
275272
Yabe, H.; Hanzawa, S.
1926
Geological age of Orbitolina bearing rocks of Japan.
The science reports of the Tohoku University. Second series, Geology