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Ghori, S.A., Gul, S., Tahir, S., Sohail, M., Batool, S., Shahwani, M.N., Bano, G. and Butt, M.- ur-R. 2019. 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. 27, 3 (Aug. 2019), 144-152. DOI:https://doi.org/10.3846/jeelm.2019.10792.