@book{42216,
	title = {Optimal area of fish sanctuary for fish conservation and sanctuary management in Afra beel, Narail /},
	publisher = {University of Dhaka, },
	year = {2006.},
	address = {Dhaka :},
	note = {Thesis (MS )--Department of Zoology, University of Dhaka, Session : 2001-2002.}
}