Volume 55, Issue 121, April 2009, Pages 1-15
S. NASR; NAGAH SAAD; NAHED WAHBA; WALAA MAHMOUD
Volume 27.2, Issue 54, July 1992, Pages 114-120
SH.M. FATHI; NAGAH SAAD
Volume 25.2, Issue 50, July 1991, Pages 98-102
NAGAH SAAD
Volume 22.1, Issue 43, September 1989, Pages 40-46
SABAH MOUSTAFA; NAGAH SAAD