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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Chittenden, F. H. (Frank Hurlbut), - United States. Bureau of Entomology. - United States. Department of Agriculture.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, Bureau of Entomology, 1905
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Agricultural pests  Cabbage hair-worm  Cabbage maggot  
  2. By: Treherne, R. C. (Reginald Charles), - British Columbia. Horticultural Branch.
    Publication info: Victoria, B.C, W.H. Cullin, 1918
    Holding Institution: Canadiana.org
    Subjects: Agricultural pests  British Columbia  Cabbage  Cabbage maggot  Diseases and pests