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By: Treherne, R. C. (Reginald Charles), - British Columbia. Horticultural Branch.Edition: 2nd ed.Publication info: Victoria, B.C, W.H. Cullin, 1919Volume:Series:Holding Institution: Canadiana.orgSubjects: British Columbia Control Diseases and pests Insect pests Onion thrips OnionsBHL Collections:
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By: Kentucky tobacco product company, incorporated, Louisville, Ky.Edition:Publication info: Louisville, Ky, The Kentucky tobacco product company, incorporated, c1916Volume:Series:Holding Institution: Library of CongressSubjects: Onion thrips SprayingBHL Collections: