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ندوة بعنوان ترشيد استهلاك الطاقة
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ندوة بعنوان ترشيد استهلاك الطاقة
22 February 2017
نظم مركز تنمية حلوان ندوة بعنوان ترشيد استهلاك الطاقة
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