J.C. Akan, F.I. Abdulrahman, J.T. Ayodele and V.O. Ogugbuaja
Research Journal of Applied Sciences 2 ( 4 ): 530 - 535 , 2007
G.A. Dimari, F.I. Abdulrahman, J.C. Akan and V.O. Ogugbuaja
Research Journal of Applied Sciences 2 ( 7 ): 846 - 849 , 2007