Não informado. (1963). Agricultural Science Review. Cooperative State Experiment Station Service, Department of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Science Review. Washington: Cooperative State Experiment Station Service, Department of Agriculture, 1963.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Agricultural Science Review. Cooperative State Experiment Station Service, Department of Agriculture, 1963.
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