Volume 25.1, Issue 49, April 1991, Pages 15-32
M.K. EL-NAFFAR; I.M. ANWAR; M.S. EL-HAWARY; A.B. MAHMOUD; AMNA M. MOSTAFA
Volume 24.2, Issue 48, January 1991, Pages 76-87
M.K. EL-NAFFAR; I.M. ANWAR; A.B. MAHMOUD; M.S. EL-HAWARY; AMNA M. MOSTAFA
Volume 24.2, Issue 48, January 1991, Pages 88-100
M.K. EL-NAFFAR; I.M. ANWAR; A.B. MAHMOUD; M.S. EL-HAWARY; AMNA M. MOSTAFA
Volume 15.2, Issue 30, January 1986, Pages 30-37
E.G. YOAKIM; M.K. EL-NAFFAR
Volume 15.2, Issue 30, January 1986, Pages 38-45
M.K. EL-NAFFAR
Volume 15.2, Issue 30, January 1986, Pages 46-57
M.K. EL-NAFFAR; G.A.Z. EL-SHAHAWI
Volume 15.2, Issue 30, January 1986, Pages 107-117
A.M. MANDOUR; M.K. EL-NAFFAR; LAILA A. OMRAN
Volume 14.1, Issue 27, January 1985, Pages 55-67
M.K. EL-NAFFAR; M.F. SAOUD; LM. HASSAN
Volume 12.1, Issue 23, May 1984, Pages 46-57
M.K. EL-NAFFAR; M.F. SAOUD; L.M. HASSAN
Volume 12.1, Issue 23, May 1984, Pages 60-65
M.K. EL-NAFFAR; M.F. SAOUD; I.M. HASSAN
Volume 11.1, Issue 21, June 1983, Pages 140-148
M.K. EL-NAFFAR; M.F. SAOUD; I.M. HASSAN