Não informado. (1978). Advances in agricultural technology. Science and Education Administration.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Advances in Agricultural Technology. Berkeley, Calif: Science and Education Administration, 1978.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Advances in Agricultural Technology. Science and Education Administration, 1978.
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