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  1. By: Johnson, George,
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 81
    Date: 1969
    Page Range: 316--318
    Publication Info: [London s.n
  2. By: Johnson, George,
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 79
    Date: 1967
    Page Range: 35--42
    Publication Info: [London s.n
  3. By: Johnson, George,
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 81
    Date: 1969
    Page Range: 65--67
    Publication Info: [London s.n