Volume 24.1, Issue 47, October 1990, Pages 63-74
M.Z. ATTIA; H.A.H. SALEM; H.L ABASS; M.K. SOLIMAN
Volume 21.2, Issue 42, May 1989, Pages 7-14
NAHED E. EL-TOUKHY; SAMIRA A. ALY; M.K. SOLIMAN