Hoque, M., Ahmed, S., Alam, M., Purkayastha, M., Belal, A. and Anwar, M. (2012) “Physicochemical and microbial water quality of Sylhet city corporation, Bangladesh”, International Journal of Natural Sciences, 2(1), pp. 33–37. doi: 10.3329/ijns.v2i1.10881.