@book{211501,
	author = {Contreras, Eduardo and UN. ECLAC},
	title = {Evaluación social de inversiones públicas},
	publisher = {Naciones Unidas, CEPAL},
	year = {dic. 2004},
	series = {Serie Manuales UN. ECLAC},
	address = {Santiago},
	note = {Includes bibliographical refrences (p. 81-82).},
	url = {http://daccess-ods.un.org/access.nsf/Get?Open&DS=LC/L.2210-P&Lang=S}
}