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  1. By: Holland, George P. (George Pearson), - Canada. Department of Agriculture.
    Publication info: Ottawa :Dept. of Agriculture, 1949
    Holding Institution: Agriculture and Agri-Food Canada (AAFC)
  2. By: Holland, George P. (George Pearson), - Canada. Department of Agriculture.
    Publication info: Ottawa :Dept. of Agriculture, 1949
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  1. By: Holland, George P. (George Pearson),
    Type: Article
    In: The Canadian field-naturalist
    Volume: 71
    Issue: 2
    Date: 1957
    Page Range: 84--84
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Holland, George P. (George Pearson),
    Type: Article
    In: The Siphonaptera of Canada
    Volume: 70
    Date: 1949
    Page Range: 1--306
    Publication Info: Ottawa :Dept. of Agriculture, 1949