Violent Volcanoes.
- Chicago, IL : Heinemann Library, 2003.
What is a volcano? What causes volcanoes? Hawaiian Islands Where do volcanoes happen? What happens when a volcano erupts? Colombia, South America, 1985 Who helps after a volcano? Mount St. Helens, 1980 Can volcanoes be predicted? Can people prepare for volcanoes? Can volcanoes be prevented? Violent volcanoes of the past