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  1. By: Gray, Percy Heath Hobart
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 69
    Date: 1961
    Page Range: 201--202
    Publication Info: Lawrence, Kan Allen Press [etc.]
  2. By: Gray, Percy Heath Hobart
    Type: Article
    In: The Canadian field-naturalist
    Volume: 62
    Issue: 1
    Date: 1948
    Page Range: 42--42
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Gray, Percy Heath Hobart
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 75
    Date: 1967
    Page Range: 12--17
    Publication Info: Lawrence, Kan Allen Press [etc.]