Volume 37.1, Issue 73, April 1997, Pages 100-108
NAWAL GH. KHALIL
Volume 36.2, Issue 72, January 1997, Pages 203-214
A.F. BASTAWROWS; NAWAL GH. KHALIL; S.R. SEDDEK; SEHAM M. ALY
Volume 28.1, Issue 55, October 1992, Pages 152-157
NAWAL GH. KHALIL
Volume 24.2, Issue 48, January 1991, Pages 131-135
SEHAM M. ALY; NAWAL GH. KHALIL; A.A. AMER
Volume 24.1, Issue 47, October 1990, Pages 116-123
SEHAM M. ALI; A.H. ELYAS; NAWAL GH. KHALIL; A.A. AAMER; M. ATTIA