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1دورية أكاديمية
المصدر: Journal of Al-Quds Open University for Administrative and Economic Research and Studies. 1(4):225
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2دورية أكاديمية
المصدر: Journal of Al-Quds Open University for Administrative and Economic Research and Studies. 1(4):107
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3
المصدر: Journal of Al-Quds Open University for Administrative and Economic Research and Studies. 3(9):1
الإتاحة: 130452