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Title: How the Earth Works: 60 Fun Activities for Exploring Volcanoes, Fossils, Earthquakes, and More, Author: Michelle O'Brien-Palmer
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How the Earth Works: 60 Fun…
by Michelle O'Brien-Palmer
eBook $12.99
Title: A Grain of Sand: Nature's Secret Wonder, Author: Gary Greenberg
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A Grain of Sand: Nature's…
by Gary Greenberg, Stacy Keach
eBook $20.00