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| First Page | Document Content | |
|---|---|---|
 Date: 2007-01-10 11:40:10Igneous rocks Decade Volcanoes Shield volcanoes Pit crater Lava lake Caldera Masaya Volcano Types of volcanic eruptions Mount Etna Geology Volcanology Volcanism |
| First Page | Document Content | |
|---|---|---|
Date: 2007-01-10 11:40:10Igneous rocks Decade Volcanoes Shield volcanoes Pit crater Lava lake Caldera Masaya Volcano Types of volcanic eruptions Mount Etna Geology Volcanology Volcanism |
