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دليل المستخدم
El Nahas، I. A. H. (1999). Patents Law and Drugs Between Egyptian Legislation and The Agreement on the Trade-Related Aspects Of Intellectual Property Rights. مجلة مصر المعاصرة، مج90, ع453,454 ، 20 - 64. مسترجع من http://search.mandumah.com/Record/663800
El Nahas، Ibrahim Ali Hassan. "Patents Law and Drugs Between Egyptian Legislation and The Agreement On the Trade-Related Aspects Of Intellectual Property Rights." مجلة مصر المعاصرة مج90, ع453,454 (1999): 20 - 64. مسترجع من http://search.mandumah.com/Record/663800