Volume 19.1, Issue 37, September 1987, Pages 106-113
S. EL-HAWAARY; M.M. EL-ABAGY; A. MOURSY; FAYZA NASR
Volume 19.1, Issue 37, September 1987, Pages 114-121
S. EL-HAWAARY; I.M. SOKKAR
Volume 18.1, Issue 35, January 1987, Pages 165-171
S. EL-HAWAARY; G.M. KHALAFALLA
Volume 18.1, Issue 35, January 1987, Pages 181-190
S. EL-HAWAARY; G.M. KHALAFALLA; LM. SOKKAR