Islam, M.S., Gani, M.A., Alfasane, M.A. and Khondker, M. 2013. Limnological notes on Nilsagar, Nilphamari, Bangladesh. Dhaka University Journal of Biological Sciences. 22, 1 (Jan. 2013), 75–78. DOI:https://doi.org/10.3329/dujbs.v22i1.46276.