@book{12341,
	author = {International Symposium on Population Structure and Development (1987 : Tokyo). and United Nations. Dept. of International Economic and Social Affairs.},
	title = {Economic and social implications of population aging : proceedings of the International Symposium on Population Structure and Development, Tokyo, 10-12 September 1987.},
	publisher = {United Nations,},
	year = {1988.},
	address = {New York : }
}