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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Gregory, John L.
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 83
    Date: 1971
    Page Range: 116--117
    Publication Info: [London s.n
  2. By: Gregory, John L.
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 84
    Date: 1972
    Page Range: 231--232
    Publication Info: [London s.n
  3. By: Gregory, John L.
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 83
    Date: 1971
    Page Range: 36--37
    Publication Info: [London s.n