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K.G. El-Rokiek, T.A. El-Shahawy and L.K. Balbaa
International Journal of Agricultural Research 2 ( 4 ): 312 - 324 , 2007
T.A. El-Shahawy, L.K. Balbaa and K.G. El-Rokiek
International Journal of Agricultural Research 2 ( 5 ): 411 - 425 , 2007
F.A. Sharara, T.A. El-Shahawy and K.G. El-Rokiek
Journal of Agronomy 4 ( 2 ): 88 - 95 , 2005