by Mafimisebi, TE, Okunmadewa, FY, Oyekale, AS, Onyeka, UP
Published in International journal of agriculture and development (18.09.2006)

by Obasi, PC, Dimkpa, TR, Onyeka, UP
Published in International journal of agriculture and development (07.03.2006)

by Onyeka, U P, Olayemi, J K, Mafimisebi, T E
Published in Journal of Agriculture and Social Research (JASR) (2005)

by Mafimisebi, T. E. (author), Onyeka, U. P. (author), Ayinde, I A. (author), Ashaolu, O. F. (author)
Year of Publication 2006

by Orebiyi, JS, Onyeka, UP, Enenta, C
Published in Journal of Technology and Education in Nigeria (2006)

by Onyeka, UP, Akujuobi, GU, Anuebunwa, UB
Published in Journal of Technology and Education in Nigeria (2005)