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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Blair, D. S. - Davis, M. B. - Canada. Department of Agriculture.
    Edition: Rev.
    Publication info: Ottawa, Canada Dept. of Agriculture, 1950
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  2. By: Davis, M. B. - Canada. Department of Agriculture. Dominion Experimental Farms Branch.
    Publication info: Ottawa, Dept. of Agriculture, 1925
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  3. By: Davis, M. B. - Dominion Experimental Farms and Stations (Canada)
    Publication info: Ottawa, Dept. of Agriculture, 1916
    Holding Institution: Canadiana.org
  4. By: Macoun, W. T. (William Tyrrell), - Berkeley, G. H. - Davis, M. B. - Dominion Experimental Farms and Stations (Canada) - Canada. Division of Entomology.
    Publication info: Ottawa, [Dept. of Agriculture, 1929]
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)