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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Cartier, Jean-Jacques - Canada. Department of Agriculture.
    Edition: [Rev.].
    Publication info: Ottawa, Canada Dept. of Agriculture, 1968
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
    Subjects: Pea aphid  
  2. Publication info: Washington, D.C, U.S. Dept. of Agriculture, [1964]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Alfalfa  Control  Diseases and pests  Forage plants  Pea aphid  
  3. By: Davis, John J. (John June),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1915
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Legumes  Pea aphid