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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Vanstone, David Edward - Marshall, H. H. - Ronald, W. G. - Canada. Agriculture Canada
    Publication info: Ottawa, Agriculture Canada, c1982
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  2. By: Vanstone, David Edward - Marshall, H. H. - Ronald, W. G. - Canada. Agriculture Canada
    Publication info: Ottawa, Communications Branch, Agriculture Canada, 1982
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)