1. Mansoor , Malek Economic Impact of the Weevils-A Preliminary Analysis Presented in Symposium on The Impact of The Pollinating Weevils On The Malaysian Oil Palm Industry Kuala Lumpur 1984
2. Law , I.H. Effect of Elaeidobius Kamerunicus On The Bunch Components Of Elaeis Guineerisis In Pamol Plantation Ibid. 1984
3. Extraction Of Vegetable Oils And Fats;David,1980
4. Some technical aspects influencing the quality of palm kernels