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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSengupta, Nilanjan. Proceedings of Second All India People's Technology Congress. Forum of Scientists Engineers and Technologists, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSengupta, Nilanjan. Proceedings of Second All India People's Technology Congress. Forum of Scientists Engineers and Technologists, 1999.
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