El Gohary، A. (2009). THE SCIENTIFIC CONTRIBUTION OF ARAB SCIENTISTS TO THE INTERNATIONAL RESEARCH: A STUDY OF THE INDICATORS FOR SOME ARAB COUNTRIES. مجلة دراسات المعلومات، ع5 ، 1 - 16. مسترجع من http://search.mandumah.com/Record/657443
El Gohary، Amgad. "THE SCIENTIFIC CONTRIBUTION OF ARAB SCIENTISTS TO THE INTERNATIONAL RESEARCH: A STUDY OF THE INDICATORS FOR SOME ARAB COUNTRIES." مجلة دراسات المعلومات ع5 (2009): 1 - 16. مسترجع من http://search.mandumah.com/Record/657443