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ALSHIMAA HASSANIEN; NAHED MAHMOUD ABDEL-AZIZ
Volume 56, Issue 124, January 2010, Pages 1-10
A.M. MANAA; H.H. ESSA; N.H. MAKAR
Volume 53, Issue 114, July 2007, Pages 1-15
M.M. HASSOUBA; M.F. HASHIM; OMAIMA M.E.L. MAGHRABY