Volume 15.1, Issue 29, September 1985, Pages 141-146
ABD EL-RAOUF MOHAMED; F.A. EL-BALKEMY; H. OMRAN; M.S. IBRAHIM
Volume 14.2, Issue 28, May 1985, Pages 159-165
ABDE EL-RAOUF MOHAMED; EL- EL NAGAR; H. ATTAR; H. OMRAN