Siraj, S., Islam, M.M., Das, P.C., Masum, S.M., Jahan, I.A., Ahsan, md A. and Shajahan, M. 2012. Removal of Chromium from Tannery Effluent Using Chitosan-Charcoal Composite. Journal of the Bangladesh Chemical Society. 25, 1 (Sep. 2012), 53–61. DOI:https://doi.org/10.3329/jbcs.v25i1.11774.