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Asian Journal of Scientific Research 1 ( 4 ): 421 - 428 , 2008
Y.G. Sabo, U.K. Sandabe, V.A. Maina and H.G. Balla
Journal of Applied Sciences 8 ( 2 ): 241 - 251 , 2008
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Journal of Applied Sciences 6 ( 2 ): 353 - 356 , 2006
V.A. Maina, S.U.R. Chaudhari and A. Williams
Journal of Applied Sciences 6 ( 10 ): 2329 - 2331 , 2006
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Journal of Applied Sciences 6 ( 5 ): 1220 - 1224 , 2006