Volume 31.1, Issue 61, April 1994, Pages 1-18
A.T. GALAL; A.M.M. HASSANEIN; NAGWA M. EL-SAWI; MADIHA M. MOHAMMED; SOAD S. ALI
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