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  1. 1

    Easing barriers to movement of plant varieties for agricultural development

    Udgivet 1997
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    Easing barriers to movement of plant varieties for agricultural development
  2. 2

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

    Udgivet 1992
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    Seed system development the appropriate roles of the private and public sectors
  3. 3

    Successful seed programs a planning and management guide

    Udgivet 1980
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    Successful seed programs a planning and management guide

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