Jabal, Mohammed Hassan, Farid Nasir Ani, and S. Syahrullail S. Syahrullail. 2018. “TRIBOLOGICAL FEATURES OF REFINED, BLEACHED AND DEODOURISED (RBD) PALM OLEIN BLENDS WITH MINERAL OIL”. Jurnal Mekanikal 38 (2). https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/21.