Gill, G. J. (1992). Seasonality and agriculture in the developing world. Foundation Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGill, Gerard J. Seasonality and Agriculture in the Developing World. Foundation Books, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGill, Gerard J. Seasonality and Agriculture in the Developing World. Foundation Books, 1992.
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