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; ; Umezawa, Hirokazu;
Nihon Genshiryoku Gakkai-Shi, 15(6), p.364 - 368, 1973/06
no abstracts in English
Kaku Busshitsu Kanri Senta Nyusu, 2(3), p.5 - 6, 1973/03
no abstracts in English