Volume 29.2, Issue 58, July 1993, Pages 159-164
M.A. ALI; A.S. SALEH; S.M. SELEIM; H.A. YOUSSEF; SANA S. KROOSH
Volume 29.2, Issue 58, July 1993, Pages 191-197
S.M. SELEIM; H.A. YOUSSEF; A.M. ALI; A.S. SALEH; SANA S. KROOSH