@book{35461,
	author = {Boserup, Ester. and Beltrán, Jordi (},
	title = {Población y cambio tecnológico },
	publisher = {Crítica, },
	year = {[1983]},
	series = {Serie general. Estudios y ensayos ; },
	address = {Barcelona : },
	note = {Indices.}
}