Khan, K., Chowdhury, M. and Huq, S.I. 2016. Effects of biochar on the fate of the heavy metals Cd, Cu, Pb and Zn in soil. Bangladesh Journal of Scientific Research. 28, 1 (Jan. 2016), 17–26. DOI:https://doi.org/10.3329/bjsr.v28i1.26240.