@book{2024,
	author = {Duncan, G.W. and Workshop on the Introduction of Fertility Control Methods (1972 : Seattle, Washington).},
	title = {Fertility control methods, strategies for introduction : proceedings [of the] Workshop, Seattle, Washington, 4-6 December 1972.},
	publisher = {Academic Press,},
	year = {1973.},
	address = {New York : }
}