Volume 36.1, Issue 71, October 1996, Pages 1-8
M.M. ABDEL-HAFEEZ
Volume 33.2, Issue 66, July 1995, Pages 84-90
H.A. ABDEL-KADER; M.M. ABDEL-HAFEEZ; A.F. BASTAWROWS
Volume 31.2, Issue 62, July 1994, Pages 177-182
M.M. ABDEL-HAFEEZ; H.A. ABDEL-KADER; A.F. BASTAWROWS; H.S. ALI