@book{125316,
	author = {Baltes, Paul B,},
	title = {Life-span developmental psychology :},
	publisher = {Academic Press,},
	year = {1973.},
	address = {New York :},
	note = {Proceedings of the 3d of a series of meetings: proceedings of the 1st are entered under title: Life-span developmental psychology: research and theory; proceedings of the 2d are entered under: Life-Span Conference, 2d, West Virginia University, 1971; proceedings of the 4th are entered under: Life-Span Developmental Psychology Conference, 4th, West Virginia University, 1974.}
}