@book{14149,
	author = {Erickson, Jon and Español Echaniz, Ignacio},
	title = {<Un> Mundo en Desequilibrio: La Contaminación de Nuestro Planeta /},
	publisher = {McGraw-Hill,},
	year = {1994.},
	series = {McGraw-Hill de Divulgación Científica},
	address = {Bogotá :}
}