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M.I. ABD EL-AZIZ; A.E. AGAG
Volume 31.2, Issue 62, July 1994, Pages 74-85
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Volume 29.2, Issue 58, July 1993, Pages 49-64
S.A.H. YOUSSEF; H.A. EL-BANNA; M.I. ABD EL-AZIZ; G.A. SOLIMAN
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