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  1. By: Brass, L. J. (Leonard John), - Ophel, Ivan L. - Bartram, Edwin B. (Edwin Bunting), - Bibby, Patrick Noel Sumner, - Langdon, Raymond Forbes Newton, - Pedley, Leslie - Willis, J. H. (James Hamlyn)
    Type: List
    In: Plant lists : Australia, Papua New Guinea, and the United States
    Date: 1948
  2. By: Langdon, Raymond Forbes Newton,
    Type: Article
    In: The Proceedings of the Royal Society of Queensland
    Volume: 54
    Date: 1943
    Page Range: 23--32
    Publication Info: [Brisbane Royal Society of Queensland] 1885-
  3. By: Langdon, Raymond Forbes Newton,
    Type: Article
    In: The Proceedings of the Royal Society of Queensland
    Volume: 61
    Date: 1950
    Page Range: 31--35
    Publication Info: [Brisbane Royal Society of Queensland] 1885-
  4. By: Fullerton, R A - Langdon, Raymond Forbes Newton,
    Type: Article
    In: Proceedings of the Linnean Society of New South Wales
    Volume: 93
    Date: 1969
    Page Range: 281--293
    Publication Info: Sydney Linnean Society of New South Wales