Oil Palm Bulletin No. 44 (May 2002) p29-38
Design and evaluation of an improved aluminium harvesting pole (Hi-Reach) for tall palm harvesting
ABDUL RAZAK Jelani , AHMAD Hitam

Oil Palm Bulletin No. 36 (May 1998) p13-20
The effects of physical characteristics of aluminium pole on the harvesting productivity of tall palms
ABDUL RAZAK Jelani , ABDUL RAHIM Shuib , AHMAD Hitam