Volume 21.2, Issue 42, May 1989, Pages 34-38
LAULA, M. EL-Shabiny; A.S. GAD; S.I. ESSA; M. EL-TRABILI; S.A.A. EL-SHATER; Fawkia ABD-EL-RAHMAN
Volume 21.1, Issue 41, January 1989, Pages 178-183
A.S. GAD; S.I. EISSA; M. EL-TRABILI; M.A.I. EL-SAYED; R.S. RAGAB; A. MOSTAFA; B.H. SERUR
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