I. Adewumi, I.A. Oke and P.A. Bamgboye
Journal of Applied Sciences 5 ( 1 ): 108 - 112 , 2005
I. Adewumi, O.E. Ojo and O. Aribisala
Journal of Applied Sciences 4 ( 3 ): 493 - 497 , 2004
I. Adewumi and M.O. Olorunfemi
Journal of Applied Sciences 5 ( 4 ): 761 - 767 , 2005