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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPadoan, Pier Carlo. Technology Accumulation and Diffusion: Is There a Regional Dimensionn. Washington, D.C: World Bank, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPadoan, Pier Carlo. Technology Accumulation and Diffusion: Is There a Regional Dimensionn. World Bank, 1997.
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