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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Kiehn, Ferdinand A. - Canada. Agriculture Canada. Research Program Services Section.
    Publication info: Agriculture Canada, c1992
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
    Subjects: Alternative agriculture  Aspect économique  Canada  Crops  Cultures de plein champ  Prairie Provinces  Variétés