Não informado. (2000). Agricultural Science Digest. Indiana Agricultural Experiment Station.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Science Digest. Lafayette, Ind: Indiana Agricultural Experiment Station, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Science Digest. Indiana Agricultural Experiment Station, 2000.
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