Oil Palm Bulletin No. 11 (November 1985) p13 - 18
Synthetic zeolites and its potential applications in fuel production in palm oil industry
T.L Ooi and A.S.H. Ong

Oil Palm Bulletin No. 5 (November 1982) p1 - 17
Development of peat soil for oil palm planting in Malaysia – Johor Barat Agricultural Project as a case study
MOHD TAYEB Haji Dolmat