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  1. The onion thrips (Thrips tabaci Lind) /
    By: Treherne, R. C. - British Columbia. Horticultural Branch.
    Edition: 2nd ed.
    Publication info: Victoria, B.C. :W.H. Cullin,1919.
    Holding Institution: (
    Subjects: British Columbia  Control  Diseases and pests  Insect pests  Onion thrips  Onions  
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  2. Spraying with "black leaf 40" to control onion thrips.
    By: Kentucky tobacco product company, incorporated, Louisville, Ky.
    Publication info: Louisville, Ky.,The Kentucky tobacco product company, incorporated,c1916.
    Holding Institution: Library of Congress
    Subjects: Onion thrips  Spraying  
    BHL Collections: Library of Congress
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