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International Journal of Agricultural Research 2 ( 11 ): 937 - 944 , 2007
L.A. Okosun, M.D. Magaji and A.I. Yakubu
Journal of Plant Sciences 5 ( 2 ): 194 - 200 , 2010
M. B. Sokoto, M.D. Magaji and A. Singh
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