Department, I. S. a. T. (1989). Research and Development Statistics. The Author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDepartment, Indan Science and Technology. Research and Development Statistics. The Author, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDepartment, Indan Science and Technology. Research and Development Statistics. The Author, 1989.
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