Volume 15.1, Issue 29, September 1985, Pages 1-7
A. HIFNY; A.K. AHMED; M.A. METWALLY
Volume 15.1, Issue 29, September 1985, Pages 19-25
A. HIFNY; A.K. AHMED; M.A. METWALLY
Volume 15.1, Issue 29, September 1985, Pages 27-33
A. HIFNY; A.K. AHMED; M.A. METWALLY
Volume 15.1, Issue 29, September 1985, Pages 35-41
A. HIFNY; A.K. AHMED; M.A. METWALLY
Volume 14.2, Issue 28, May 1985, Pages 11-17
A. HIFNY; A.K. AHMED; M.A. METWALLY