GHORI, S. A.; GUL, S.; TAHIR, S.; SOHAIL, M.; BATOOL, S.; SHAHWANI, M. N.; BANO, G.; BUTT, M.- UR-R. Wood-derived biochar influences nutrient use efficiency of heavy metals in spinach (spinacia oleracea) under groundwater and wastewater irrigation. Journal of Environmental Engineering and Landscape Management, v. 27, n. 3, p. 144-152, 29 Aug. 2019.