Igo, H. (1959). Some Permian fusulinids from the Hirayu district, southeastern part of the Hida Massif, central Japan. Science Reports of the Tokyo Kyoiku Daigaku, section C. 6: 231-254.
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Igo, H.
1959
Some Permian fusulinids from the Hirayu district, southeastern part of the Hida Massif, central Japan
Science Reports of the Tokyo Kyoiku Daigaku, section C