Volume 30, APRIL- JUNE, June 2009, Pages 229-234
Gaber A.A.; M.F. Abo El-Fatth
Volume 30, JANUARY- MARCH, March 2009, Pages 128-135
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Volume 28, JANUARY- MARCH, January 2007, Pages 9-18
Gaber A.A.; Safaa S.M. El-Sayed; M.F. Abo El-Fatth
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