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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रebrary, Inc, Pedro A. Björklund, और Frederick V. Mello. Soil Organic Matter: Ecology, Environmental Impact and Management. New York: Nova Science Publishers, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रebrary, Inc, et al. Soil Organic Matter: Ecology, Environmental Impact and Management. Nova Science Publishers, 2012.
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