Islam, M. S., Kazi, M. A. I., Hossain, M. M., Ahsan, M. A., & Hossain, A. M. (2008). Propagation of Heavy Metals in Poultry Feed Production in Bangladesh. Bangladesh Journal of Scientific and Industrial Research, 42(4), 465–474. https://doi.org/10.3329/bjsir.v42i4.755