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  1. By: Valder, P. G.
    Type: Article
    In: Proceedings of the Linnean Society of New South Wales
    Volume: 80
    Date: 1955
    Page Range: 159--162
    Publication Info: Sydney Linnean Society of New South Wales
  2. By: Khan, A G - Valder, P. G.
    Type: Article
    In: Proceedings of the Linnean Society of New South Wales
    Volume: 97
    Date: 1972
    Page Range: 35--41
    Publication Info: Sydney Linnean Society of New South Wales
  3. By: Shaw, D E - Valder, P. G.
    Type: Article
    In: Proceedings of the Linnean Society of New South Wales
    Volume: 77
    Date: 1953
    Page Range: 307--322
    Publication Info: Sydney Linnean Society of New South Wales