Gangwar B. Singh V.K. (2012). System based integrated nutrient management. New India publishing agency.
シカゴスタイル引用形Gangwar B. Singh V.K. System Based Integrated Nutrient Management. New delhi: New India publishing agency, 2012.
MLA引用形式Gangwar B. Singh V.K. System Based Integrated Nutrient Management. New India publishing agency, 2012.
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