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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Dustan, G. Gordon. - Beaulieu, A. A. (André Albert) - Canada. Department of Agriculture.
    Publication info: Ottawa, Dept. of Agriculture, 1955
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  2. By: Dustan, G. Gordon. - Beaulieu, A. A. (André Albert) - Canada. Division of Entomology.
    Publication info: [Ottawa], Ministère de l'agriculture du Canada, Services des sciences, Division de l'entomologie, 1956
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)