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  1. By: Dickson, C G C - Stephen, R D
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 87
    Date: 1975
    Page Range: 129--132
    Publication Info: [London s.n
  2. By: Dickson, C G C - Stephen, R D
    Type: Article
    In: The entomologist's record and journal of variation
    Volume: 83
    Date: 1971
    Page Range: 255--259
    Publication Info: [London s.n