Krishna, S. (2012). Agriculture and a changing environment in Northeastern India. Routledge.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKrishna, Sumi. Agriculture and a Changing Environment in Northeastern India. Routledge, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKrishna, Sumi. Agriculture and a Changing Environment in Northeastern India. Routledge, 2012.
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