Não informado. (1938). Agricultural Finance Review. U.S. Department of Agriculture, Economic Research Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Finance Review. Washington: U.S. Department of Agriculture, Economic Research Service, 1938.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Finance Review. U.S. Department of Agriculture, Economic Research Service, 1938.
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