Roy, S. (1990). Agriculture and technology in developing countries: India and Nigeria. Sage Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoy, Sumit. Agriculture and Technology in Developing Countries: India and Nigeria. New Delhi ; Newbury Park: Sage Publications, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoy, Sumit. Agriculture and Technology in Developing Countries: India and Nigeria. Sage Publications, 1990.
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