Volume 20.1, Issue 39, May 1988, Pages 12-22
R.S. MOHAMED
Volume 18.1, Issue 35, January 1987, Pages 11-16
M.N.M. SALEH; R.S. MOHAMED; M.A. GABR; A.T. GALAL
Volume 17.2, Issue 34, September 1986, Pages 32-43
M.N.M. SALEH; R.S. MOHAMED; M.A. GABR; A.T. GALAL
Volume 15.2, Issue 30, January 1986, Pages 1-9
A.N. NASR; M.N.M. SALEH; R.S. MOHAMED; M.A. GABR
Volume 15.1, Issue 29, September 1985, Pages 57-64
M.A. GABER; R.S. MOHAMED