@book{2084,
	author = {Grasso, Santiago. and Porras, Juan Carlos,},
	title = {Nuestro planeta hoy :},
	publisher = {Billiken,},
	year = {1998.},
	series = {Biblioteca Billiken para la familia ;},
	address = {Buenos Aires :},
	edition = {1ª ed.},
	note = {Incorpora glosario.}
}