@book{116571,
	author = {Sauvy, Alfred},
	title = {Historia del control de los nacimientos},
	publisher = {Ediciones Península},
	year = {1972.},
	series = {Historia , Ciencia, Sociedad, 77},
	address = {Barcelona},
	note = {Translation of : La prévention des naissances dans la famille.}
}