Volume 29.1, Issue 57, April 1993, Pages 241-248
G.A. EL-AMRAWI; F.M. HUSSEIN; IMAN.E. EL-BAWAB
Volume 29.1, Issue 57, April 1993, Pages 249-259
G.A. EL-AMRAWI; F.M. HUSSEIEN; IMAN E. EL-BAWAB
Volume 25.2, Issue 50, July 1991, Pages 211-216
G.A. EL-AMRAWI; A.D. ZAKARIA; M.T. NASR