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  1. By: Bootsma, A. - Canada. Agriculture Canada. Research Branch - Land Resource Research Centre (Canada)
    Publication info: Ottawa, Agriculture Canada, Direction générale de la recherche, 1984
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  2. By: Bootsma, A. - Boisvert, Johanne, - Canada. Agriculture Canada. Research Branch
    Publication info: [Ottawa], Research Branch, Agriculture Canada, 1991
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  3. By: Bootsma, A. - Canada. Agriculture Canada. Research Branch - Land Resource Research Centre (Canada)
    Publication info: Ottawa, Agriculture Canada, Research Branch, c1991
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  4. By: Bootsma, A. - De Jong, Reinder. - Dumanski, J. (Julian) - Canada. Agriculture Canada. Research Branch - Canada. Centre for Land and Biological Resources Research.
    Publication info: Ottawa, Research Branch, Agriculture Canada, 1992
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)