@book{13823,
	author = {United Nations International Symposium on Population and Development Planning (1989 : Riga, Latvia). and United Nations. Department of Economic and Social Development.},
	title = {Population and development planning : proceedings of the United Nations International Symposium on Population and Development Planning, Riga, Latvian Soviet Socialist Republic, 4-8 December 1989.},
	publisher = {United Nations,},
	year = {1993.},
	address = {New York : }
}