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