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Iowa Underground A Guide to the State's Subterranean Treasures
by Brick, Greg
ISBN: 9781931599399
List Price: $18.95
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Caves and Karst of the Upper Midwest, USA : Minnesota, Iowa, Illinois, Wisconsin
by Brick, Greg A., Alexander J...
ISBN: 9783030546359
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Caves and Karst of the Upper Midwest, USA : Minnesota, Iowa, Illinois, Wisconsin
by Brick, Greg, Alexander, Calvin
ISBN: 9783030546328
List Price: $159.99
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8.
Minnesota Caves: History & Lore
by Brick, Greg, Greg Brick, PhD
ISBN: 9781540217165
List Price: $28.99