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  1. 1

    Easing barriers to movement of plant varieties for agricultural development

    出版 1997
    图书

    Easing barriers to movement of plant varieties for agricultural development
  2. 2

    Seed system development the appropriate roles of the private and public sectors 由 Jaffee, Steven

    出版 1992
    图书

    Seed system development the appropriate roles of the private and public sectors
  3. 3

    Successful seed programs a planning and management guide

    出版 1980
    图书

    Successful seed programs a planning and management guide

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