Não informado. (1970). Communications in Soil Science and Plant Analysis. Marcel Dekker.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Communications in Soil Science and Plant Analysis. New York: Marcel Dekker, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Communications in Soil Science and Plant Analysis. Marcel Dekker, 1970.
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