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  1. By: Canada. Division of Entomology.
    Publication info: Ottawa :Division of Entomology,1915-
    Holding Institution: University Library, University of Illinois Urbana Champaign
  2. By: Canada. Division of Entomology. - HANDFORD, R.H. - PUTNAM, L.G.
    Holding Institution: Agriculture and Agri-Food Canada (archive.org)