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Abbas, A.M.A |
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Mathematics Department , Faculty of Science Cairo University, El Giza, Egypt. |
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E-mail: @ |
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Abd El Bassier,F.I. |
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Mathematics Department , Faculty of Science El Menia University, El Menia , Egypt. |
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Abdel-Megied ,M. |
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Mathematics Department , Faculty of Science El Menia University , El Menia , Egypt. El Menia , Egypt |
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Ali ,M.R. |
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Mathematics Department , Faculty of Science Helwan University, Helwan near Cairo, Egypt. |
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Ammar,Samah A. |
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Mathematics Department , Faculty of Girls, Ein Shams University, Cairo, Egypt. |
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E-mail: @ |
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E-mail:amegied @frcu.eun.eg |
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E-mail: rmmal1955@yahoo.com |
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E-mail: @ |
