Volume 23.1, Issue 45, April 1990, Pages 176-183
SAMIA SELEIM; K.E.H. ABDALLA; A.K. AHMED; A.E. BOLBOL
Volume 23.1, Issue 45, April 1990, Pages 184-190
M.A. ALI; A.S. SALEH; SAMIA SELEIM; LH. AHMED
Volume 23.1, Issue 45, April 1990, Pages 191-199
M.A. ALI; A. NAFADY; SAMIA SELEIM; A.S. SALEH