@book{104145,
	title = {Studies on the relative toxicity of some chlorinated and organophosphorus insecticides against the tubificid worm, limnodrilus hoffmeisteri and effects on its predator /},
	publisher = {University of Dhaka, },
	year = {1972.},
	address = {Dhaka :},
	note = {Thesis (MS )--Department of Zoology, University of Dhaka, Session : 1971-72.}
}