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SAYAF W.Y
Volume 60, Issue 140, January 2014, Pages 128-132
EL-DOSOKY, H.F.A.; SANYA, T. EL-GHAMRY; AZZA, E.A. HASSAN
Volume 57, Issue 131, October 2011, Pages 1-17
SAMIA M. MOHAMED; SAMIA I. AFIFI
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AMR AMER