Não informado. (1974). Grain Industries Plants. Plant Management and Operations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Grain Industries Plants. Chicago, Ill: Plant Management and Operations, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Grain Industries Plants. Plant Management and Operations, 1974.
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