Volcanoes by Nell Cross Beckerman | Scholastic Education。Volcanoes: Earth's Explosive Past: Steven A. Austin, John D。Encyclopedia of Volcanoes: Sigurdsson, Haraldur, Houghton, Bruce。Volcanoes (A Firefly Guide): Rosi, Mauro, Papale, Paolo, Lupi。R.A.F. Cas & J.V. Wright 1988UNWIN HYMAN in London