Melissopolynology Literature 4: The efforts of filteration on content and concentration of plant pollen in honey

Literature 4: Yan Weiyu, Wei Li. The efforts of filteration on content and concentration of plant pollen in honey. The 11th National Conference on the Development and Utilization of Pollen Resources. Fuyang city， Zhejiang province, China. 2010-08-01,pp: 217-222. Literature in Chinese, download from: 过滤对蜂蜜中植物花粉含量及浓度的影响 - 中国知网