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An Efficient Method for Separation and Purification of Betulin from Birch Bark
LI Ying, LI Lin-Xi, ZHANG Yu-Qi, WANG Yu, ZHAN Ya-Guang, YIN Jing
Bulletin of Botanical Research . 2020, (3): 468 -475 .  DOI: 10.7525/j.issn.1673-5102.2020.03.019