Lee Yit Leng, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid and Mohamadu Boyie Jalloh
American Journal of Applied Sciences 6 ( 5 ): 824 - 828 , 2009
Claudia Hui Hui Chen, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid and Mohamadu Boyie Jalloh
American Journal of Applied Sciences 6 ( 7 ): 1327 - 1330 , 2009