@book{5419,
	author = {ERICKSON, JON.},
	title = {LAS EDADES DEL HIELO : },
	publisher = {MCGRAW-HILL},
	year = {1992},
	series = {SER. MCGRAW-HILL DE DIVULGACION CIENTIFICA},
	address = {MEXICO: },
	note = {INCLUYE INDICE.}
}