Não informado. (1939). International journal of agrarian affairs. University of Oxford, Institute of Agrarian Affairs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Agrarian Affairs. Oxford, Inglaterra: University of Oxford, Institute of Agrarian Affairs, 1939.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. International Journal of Agrarian Affairs. University of Oxford, Institute of Agrarian Affairs, 1939.
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