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By: Twinn, C. R. (Cecil Raymond) - Canada. Department of Agriculture. Science Service.Edition:Publication info: Ottawa, Canada Department of Agriculture, 1956Volume: 972Series:Holding Institution: Agriculture and Agri-Food Canada (AAFC)Subjects:BHL Collections:
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By: Peterson, L. O. T. - Canada. Department of Agriculture. Science Service.Edition:Publication info: Ottawa, Department of Agriculture, 1957Volume:Series:Holding Institution: Agriculture and Agri-Food Canada (AAFC)Subjects:BHL Collections:
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By: MacNay, C. G. - Canada. Department of Agriculture. Science Service.Edition:Publication info: Ottawa, Services des Sciences, Division de l'entomologie, Ministère de l'agriculture du Canada, 1955Volume:Series:Holding Institution: Agriculture and Agri-Food Canada (AAFC)Subjects:BHL Collections:
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By: Gregson, John D. - Canada. Department of Agriculture. Science Service.Edition:Publication info: [Ottawa], Queen's Printer, 1956Volume:Series:Holding Institution: Agriculture and Agri-Food Canada (AAFC)Subjects:BHL Collections:
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By: Balch, R. E. (Reginald Ernest), - Canada. Department of Agriculture. Science Service.Edition:Publication info: Ottawa, Canada Department of Agriculture, 1958Volume:Series:Holding Institution: Agriculture and Agri-Food Canada (AAFC)Subjects:BHL Collections: