Não informado. (1964). Geographica. University of Malaya, Department of Geography.
Chicago-viite (17. p.)Não informado. Geographica. Kuala Lumpur: University of Malaya, Department of Geography, 1964.
MLA-viite (8. p.)Não informado. Geographica. University of Malaya, Department of Geography, 1964.
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