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APA Citation
Chen, F., Ameen, A., Tang, C., Du, F., Yang, X., & Xie, G. (2017). effects of Nitrogen Fertilization on Soil Nitrogen for Energy Sorghum on Marginal Land in China. Agronomy Journal, 109, 636–645. http://access.bl.uk/ark:/81055/vdc_100099473553.0x000059