Kobayashi, T.; Amano, M. (1955). On the Pseudoquadratae trigonians, Steinmannella, in the Indo-Pacific Province. Japanese Journal of Geology and Geography. 27: 193-208.
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Kobayashi, T.; Amano, M.
1955
On the Pseudoquadratae trigonians, <em>Steinmannella</em>, in the Indo-Pacific Province