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دليل المستخدم
El Nori، A. E. g. (1979). Trends Towards Planning For scientific and Technological Information Systems and Services For Development in The Arab Countries. مجلة التربية، ع32 ، 18 - 19. مسترجع من http://search.mandumah.com/Record/681029
El Nori، Abd El ghani. "Trends Towards Planning For Scientific and Technological Information Systems and Services For Development in The Arab Countries." مجلة التربية ع32 (1979): 18 - 19. مسترجع من http://search.mandumah.com/Record/681029