An article published inside the International Journal of Modern Engineering Research (IJMER) Website:www.ijmer.com (ISSN: 2249-6645, Vol.2, Issue.3, May-June 2012 pp-799-806) Emmanuel B. Yamb, Ph.D. (University of Bamenda, Republic of Cameroon, P.O. Box 8842 Douala) Christian A. Bock Hyeng Ph. D. (North Carolina Agricultural and Technical State University, 1601 E. Market St., Greensboro, NC 27411, USA)Read More…