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Mount St. Helens / Cascade Volcanoes / Lava dome / Crater Glacier / Types of volcanic eruptions / St. Helens / Oregon / St. Helens / Dacite / Volcanic activity of Mount St. Helens / Geology / Igneous petrology / Petrology


USGS professional paper 1750, contents and contributors
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Document Date: 2009-03-30 19:09:21

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File Size: 149,88 KB

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