Não informado. (1959). Canadian agricultural engineering. Canadian Society of Agricultural Engineering.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Agricultural Engineering. Ottawa: Canadian Society of Agricultural Engineering, 1959.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Canadian Agricultural Engineering. Canadian Society of Agricultural Engineering, 1959.
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