@book{73884,
	author = {Bronfenbrenner, Urie, and Condry, John C., and Russell Sage Foundation.},
	title = {Two worlds of childhood: U.S. and U.S.S.R.},
	publisher = {Russell Sage Foundation},
	year = {1970.},
	series = {Publications of Russell Sage Foundation},
	address = {New York}
}