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Kobayashi, T.; Hisakosi, S. (1942). On Some Naiads from the Upper Palaeozoic Formations in Eastern Asia. Japanese Journal of Geology and Geography. 18: 225-235.
Kobayashi, T.; Hisakosi, S. (1942). On Some Naiads from the Upper Palaeozoic Formations in Eastern Asia. Japanese Journal of Geology and Geography. 18: 225-235.