North Borneo. Geological Survey Department & Wilford, G. E & Malaya. Survey Department. (1960). Geological map of the Brunei Town area 1:50 000 Retrieved October 21 ...
North Borneo. Geological Survey Department & Wilford, G. E & Malaya. Survey Department. (1960). Geological map of Brunei and adjacent parts of Sarawak : 1:125 000 ...
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