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The Mysteries Of North America's Great Lakes | Naked Science | Spark
What’s so great about the Great Lakes? - Cheri Dobbs and Jennifer Gabrys
Think you know the Great Lakes? Here are some little-known facts
Great Lakes Facts
Drain The Great Lakes of America | Secrets of the Freshwater Oceans
Three Suprising Great Lakes Facts That Will Shift Your Perspective
10 Mysteries Lurking Underneath the Great Lakes
What are the Great Lakes? Facts for Kids
Lake Michigan: The Deadliest Great Lake
How the Great Lakes Were Formed
WORLD GEOGRAPHY 101: The Great Lakes
Great Lakes Geography/Great Lakes North America