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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Polovinkin, A. A. (Aleksandr Aleksandrovich)
    Publication info: ren min jiao yu chu ban she
    Holding Institution: Institute of Botany, Chinese Academy of Sciences
  2. By: Polovinkin, A. A. (Aleksandr Aleksandrovich)
    Publication info: dong bei jiao yu chu ban she 东北教育出版社,
    Holding Institution: Institute of Botany, Chinese Academy of Sciences