American Society of Agronomy. Journal of environmental quality.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Society of Agronomy. Journal of Environmental Quality.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAmerican Society of Agronomy. Journal of Environmental Quality.
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