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  1. By: Dalton, John P. (John Patrick)
    Type: Article
    In: Transactions of the Royal Society of South Africa
    Volume: 4
    Date: 1914
    Page Range: 123--136
    Publication Info: Cape Town, Royal Society of South Africa,
  2. By: Dalton, John P. (John Patrick)
    Type: Article
    In: Transactions of the Royal Society of South Africa
    Volume: 9
    Date: 1921
    Page Range: 223--228
    Publication Info: Cape Town, Royal Society of South Africa,