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توثيق أسلوب شيكاغو (الطبعة السابعة عشر)omar, amani. On the Transportation Problem with Mixed Constraints. cairo: the institute of national planning, 1986.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)omar, amani. On the Transportation Problem with Mixed Constraints. the institute of national planning, 1986.