Não informado. (2000). Special report. Arkansas Agricultural Experiment Station.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Special Report. Fayetteville, Ark: Arkansas Agricultural Experiment Station, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Special Report. Arkansas Agricultural Experiment Station, 2000.
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