Roadside Geology of Minnesota, by Ojakangas, Richard W.
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- ISBN: 9780878425624 | 0878425624
- Cover: Paperback
- Copyright: 10/15/2009
Minnesota's lakes may be its most famous features, but the glaciated countryside disguises a much longer history of volcanoes and plate collisions--not surprising when you learn that Minnesota was at the active edge of the fledgling North American continent for several billion years.