Sindhøj, E. (2001). Elevated atmospheric CO₂ in a semi-natural grassland. Swedish University of Agricultural Sciences.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSindhøj, Erik. Elevated Atmospheric CO₂ in a Semi-natural Grassland. Uppsala: Swedish University of Agricultural Sciences, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSindhøj, Erik. Elevated Atmospheric CO₂ in a Semi-natural Grassland. Swedish University of Agricultural Sciences, 2001.
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