Não informado. (1949). Science reports of the Tohoku University. Tohoku University, Faculty of Science.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Science Reports of the Tohoku University. Sendai, Japão: Tohoku University, Faculty of Science, 1949.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Science Reports of the Tohoku University. Tohoku University, Faculty of Science, 1949.
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