Logging data and location map for sheet 123 Yong Peng. : RAK (D8) - 1987 - 1 v (unnumbered) 30 cm 1 map Fifth Malaysia Plan Industrial Minerals Project Kaolin Component. Subjects--Topical Terms: Mineralogy--Perak--Yong Peng Subjects--Geographic Terms: Yong Peng (Perak)