CONSTITUENTS OF POLLEN. V. CONSTITUENTS OF BETULA PLATYPHYLLA VAR. JAPONICA.OHMOTO T; NIKAIDO T; IKUSE M et al.1978; CHEM. PHARMAC. BULL.; JPN; DA. 1978; VOL. 26; NO 5; PP. 1437-1442; BIBL. 7 REF.Article

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