@book{42826,
	author = { Islam, Md. Asadul},
	title = {Salinity changes in the Bhairab-Rupsa river and the effects of poldering on Khulna city environ /},
	publisher = {University of Dhaka, },
	year = {1998.},
	address = {Dhaka :},
	note = {Thesis (MS )--Department of Geography & Environment, University of Dhaka, Session : 1992-1993.}
}