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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Canada. Department of Agriculture. Forest Biology Division. - Raizenne, Henri.
    Publication info: Ottawa, 1952
    Holding Institution: University Library, University of Illinois Urbana Champaign
  2. By: Canada. Department of Agriculture. Forest Biology Division. - McMinn, R. G.
    Publication info: Ottawa, Forest Biology Division, Canada Dept. of Agriculture, [1961]
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)