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.
發表於2025-01-25
Roadside Geology of Minnesota 2025 pdf epub mobi 電子書 下載
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Roadside Geology of Minnesota 2025 pdf epub mobi 電子書 下載