1. Treatment of effluent from SMR block rubber factories;bin Ibrahim;Planters' Bull.,1978
2. Starting of anaerobic/facultative ponds for treatment of rubber processing effluent;bin Ibrahim;Planters' Bull.,1980
3. Ahmed Ibraham, Sethu, S., Mohd. zin A. Karim and Zaid Isa. 1979. Anerobic/facultative ponding system for treatment of latex concentrate effluent. Proceedings of the Rubber Research Institute of Malaysia. Planters' Conference, Kuala Lumpur. pp. 419–435.
4. Preservation of natural rubber latex concentrate, Part III - Evaluation of various organo zinc compounds as secondary preservatives;Angove;Trans. Inst. Rubb. Ind.,1965
5. The effect of tree lace and cuplump storage conditions on the properties of brown crepe;Arumugam;Planters' Bull.,1964