O. Chukwu, H.I. Mustapha and H.B. Abdul Gafar
Environmental Research Journal 2 ( 6 ): 334 - 338 , 2008
O. Chukwu, H.I. Mustapha and H.B. Abdul Gafar
Environmental Research Journal 2 ( 6 ): 339 - 342 , 2008
J.J. Musa, O. Chukwu and S. Bello
International Business Management 2 ( 5 ): 195 - 200 , 2008
Journal of Engineering and Applied Sciences 3 ( 7 ): 602 - 606 , 2008
O. Chukwu, S. Segi and P.A. Adeoye
Journal of Engineering and Applied Sciences 3 ( 7 ): 607 - 610 , 2008