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  1. By: Quaintance, A. L. (Altus Lacy), - Sasscer, E. R. (Ernest Ralph), - United States. Office of Experiment Stations.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1910
    Holding Institution: University of Florida, George A. Smathers Libraries
    Subjects: Oyster-shell scale  Scurfy scale  
    BHL Collections: Expanding Access to Biodiversity Literature
  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  Diseases and pests  Fruit  Oyster-shell scale