Igo, Hisayoshi
Some Permian fusulinids from the Hirayu district southeastern part of the Hida Massif, Central Japan - Tokyo Geographical Institute and Geological and Mineralogical Institute, Tokyo University of Education March 1959 - pp. 231-254 láms.
FORAMINIFERA
MICROPALEONTOLOGIA
PERMICO
JAPON
Some Permian fusulinids from the Hirayu district southeastern part of the Hida Massif, Central Japan - Tokyo Geographical Institute and Geological and Mineralogical Institute, Tokyo University of Education March 1959 - pp. 231-254 láms.
FORAMINIFERA
MICROPALEONTOLOGIA
PERMICO
JAPON