qayum, a. (1965). development of a dual economy. the institute of national planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रqayum, a. Development of a Dual Economy. cairo: the institute of national planning, 1965.
एमएलए (9वां संस्करण) प्रशस्ति पत्रqayum, a. Development of a Dual Economy. the institute of national planning, 1965.
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