engert, M. (1964). the role of industry economic development. National Planning Institute.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रengert, M. The Role of Industry Economic Development. cairo: National Planning Institute, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रengert, M. The Role of Industry Economic Development. National Planning Institute, 1964.
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