@book{42013,
	title = {Toxicity of copper sulphate (CuSO4 5H2O) to shingi fish, Heteropneustes fossilis (Bloch) : lethal doses and histopathological aspects /},
	publisher = {University of Dhaka, },
	year = {2009.},
	address = {Dhaka :},
	note = {Thesis (MS )--Department of Zoology, University of Dhaka, Session : 2006-2007.}
}