A.U. Akpan-Idiok and P.O. Ogbaji
International Journal of Agricultural Research 8 ( 3 ): 107 - 122 , 2013
E.E. Aki, I.E. Esu and A.U. Akpan-Idiok
International Journal of Agricultural Research 9 ( 4 ): 187 - 199 , 2014
A.U. Akpan-Idiok, M.E. Ukabiala and O.S. Amhakhian
International Journal of Soil Science 8 ( 2 ): 32 - 46 , 2013
I.E. Esu, A.U. Akpan-Idiok, P.I. Otigbo, E.E. Aki and K.I. Ofem
International Journal of Soil Science 9 ( 1 ): 22 - 36 , 2014
A.U. Akpan-Idiok, A. Ibrahim and I.A. Udo
Research Journal of Environmental Sciences 6 ( 6 ): 210 - 221 , 2012