By Haggar S.M. El   Baher R.A.   in International Journal of Environment and Pollution

ISSN:0957-4352|11|2|211-227

Inderscience Publishers‎(1999)‎

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By El-Haggar S.M.   Khalil M.   in International Journal of Environment and Pollution

ISSN:0957-4352|8|1-2|164-173

Inderscience Publishers‎(1997)‎

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By Moustafa A.   Haggar S.M. El   Mawla A. Gad El   in International Journal of Environment and Pollution

ISSN:0957-4352|12|1|97-103

Inderscience Publishers‎(1999)‎

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By El-Haggar S.M.   Hamoda M.F.   Elbieh M.A.   in International Journal of Environment and Pollution

ISSN:0957-4352|9|4|411-420

Inderscience Publishers‎(2009)‎

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By KHATWA M. ABOU   SALEM H.G.   HAGGAR S.M.   in Canadian Metallurgical Quarterly

ISSN:0008-4433|44|3|339-350

Maney Publishing‎(2005)‎

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