标题：A survey of the incidence of poplar tree gum in propolis products on the Chinese retail market（IF:1.942
作者：Zhang Cui-ping（张翠平）, Shun Ping, Kai Wang, Shuai Huang & Fu-Liang Hu*（胡福良）.
来源出版物：Journal of Apicultural research 卷:54 期：1 页：30-35 DOI:
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