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  1. The embryology of Larix,
    By: Schopf, James Morton,
    Publication info: Urbana,The University of Illinois Press,1943.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Botany  Embryology  Larch  
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  2. The large larch saw-fly (Nematus erichsoni)
    By: Hewitt, C. Gordon
    Publication info: London? :s.n.,1908?
    Contributed by: Canadiana.org (archive.org)
    Subjects: Control  Diseases and pests  Insect pests  Larch  Larch sawfly  
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  3. The large larch sawfly (Nematus erichsonii) with an account of its parasites, other natural enemies and means of control /
    By: Hewitt, C. Gordon - Canada. - Dominion Experimental Farms and Stations (Canada)
    Publication info: Ottawa :Govt. Print. Bureau,1912.
    Contributed by: Canadiana.org (archive.org)
    Subjects: Control  Diseases and pests  Insect pests  Larch  Larch sawfly  
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