Não informado. (2009). Records of the Geological Survey of Tanganyika. Government Printer.
Chicago-viite (17. p.)Não informado. Records of the Geological Survey of Tanganyika. Dar es Salaam, Tanzania: Government Printer, 2009.
MLA-viite (8. p.)Não informado. Records of the Geological Survey of Tanganyika. Government Printer, 2009.
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