Não informado. (1955). Texas agricultural progress. Texas Agricultural Experiment Station.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Texas Agricultural Progress. College Station, Tex: Texas Agricultural Experiment Station, 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Texas Agricultural Progress. Texas Agricultural Experiment Station, 1955.
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