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By: Harper, A. M. (Alexander Maitland), - Roberts, D. W. A. - Canada. Agriculture Canada. Research BranchEdition:Publication info: Lethbridge, Alta, Research Branch, Agriculture Canada, 1988Volume: 1988-4Series:Holding Institution: Agriculture and Agri-Food Canada (AAFC)Subjects:BHL Collections:
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By: Harper, A. M. (Alexander Maitland), - University of Alberta. Dept. of Entomology.Edition:Publication info: Edmonton, Alberta, The University of Alberta, [1951]Volume:Series:Holding Institution: University of Alberta LibrarySubjects:BHL Collections: