عمر: محمد عبد الحليم من الضوابط الإسلامية للأسواق / = Min dawabit al-Islamiyah lil-aswaq إعداد: محمد عبد الحليم عمر - al-Qahirah : Matba'at Markaz Salih Kamil, 2003 - 86 p. ; 20 cm. ISBN: 997224246x Subjects--Topical Terms: Competition--Religious aspects--IslamFree enterprise--Religious aspects--IslamMonopolies (Islamic law)Monopolistic competition--Religious aspects--IslamPricing--Religious aspects--Islam LC Class. No.: BP158.4.F511 / U48M 2003