Não informado. (1952). World agriculture. International Federation of Agricultural Producers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. World Agriculture. Paris: International Federation of Agricultural Producers, 1952.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. World Agriculture. International Federation of Agricultural Producers, 1952.
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