Volume 20.2, Issue 40, September 1988, Pages 80-85
A.H. BAYOUMI; S. MOUSA; A. SOLIMAN; L.H. SOKKAR
Volume 20.1, Issue 39, May 1988, Pages 178-184
S. MOUSA; A. SOLIMAN; A.H. BAYOUMI; L.H. SOKKAR