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  1. By: Canada. Division of Entomology. - Canada. Department of Agriculture. - Canada. Division of Entomology and Botany. - Canada. Experimental Farms Service.
    Publication info: Ottawa :[s.n.],1884-1916/17.
    Holding Institution: University Library, University of Illinois Urbana Champaign
  2. By: Central Experimental Farm (Ottawa, Ont.) - Canada. Division of Entomology and Botany.
    Publication info: Ottawa :Government Print. Bureau,
    Holding Institution: Smithsonian Libraries