@book{64931,
	author = {Barros de Castro, Antonio and Lessa, Carlos Francisco },
	title = {Introducción a la economía  },
	publisher = {Siglo Veintiuno, },
	year = {2000},
	series = {Economía y demografía},
	address = {México :},
	edition = {54a ed.},
	note = { }
}