M. Ebrahim Ali Alfegi, Kamaruzzaman Sopian, Mohd Yusof Hj Othman and Baharudin Bin Yatim
American Journal of Applied Sciences 5 ( 7 ): 866 - 871 , 2008
Ebrahim M. Ali Alfegi, Kamaruzzaman Sopian, Mohd Yusof Hj Othman and Baharudin Bin Yatim
American Journal of Environmental Sciences 5 ( 5 ): 592 - 598 , 2009
Ibrahim N. Hassan, Mohd Yusof Hj Othman and Abdul Latif Samian
The Social Sciences 13 ( 7 ): 1218 - 1222 , 2018