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- [43] Improved isolation of betulin and lupeol from birch bark and oxidation of their acetylated derivatives with chromyl chloride Monatshefte für Chemie - Chemical Monthly, 2018, 149 : 947 - 952
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- [45] ISOLATION AND PARTIAL HYDROLYSIS OF ACIDIC XYLAN FROM BIRCH (BETULA-VERRUCOSA) INNER BARK PAPERI JA PUU-PAPER AND TIMBER, 1981, 63 (03): : 121 - 124