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APA Citation
Liu, W., Huo, R., Xu, J., Liang, S., Li, J., Zhao, T., & Wang, S. (2017). effects of biochar on nitrogen transformation and heavy metals in sludge composting. Bioresource technology, 235, 43–49. http://access.bl.uk/ark:/81055/vdc_100045516260.0x000035