@book{78412,
	author = {Ali, Md. Solaiman and Hasan, Anwarul, Supervisor },
	title = {Biological Factors of Mental Retardation Among the Tribal Population in Dinajpur /},
	publisher = {Institute of Biological Sciences, University of Rajshahi,},
	year = {2003},
	address = {Rajshahi :}
}