@book{139057,
	author = {Serrano Narváez, Helga},
	title = {Río+20:},
	year = {may. 2012},
	address = {Quito},
	url = {https://revistas.arqueo-ecuatoriana.ec/es/nuestro-patrimonio/40-revista-nuestro-patrimonio/52-nuestro-patrimonio-33}
}