@book{42028,
	title = {Study on the development of the Gadwall Anas strepera Linnaeus, in captivity (with observations on daily activities, behaviour and food preferences) / },
	publisher = {University of Dhaka,},
	year = {1997.},
	address = {Dhaka : },
	note = {Thesis (MS )—Department of Zoology, University of Dhaka, Session : 1993-94.

}
}