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2384 Products found

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Environmental Protection (English)

The relationship between human progress and its effect on the natural environment has long been a...Added August 14, 2014
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Hydrofracking (English)

Learn how hydrofracking works and explores the controversy surrounding its potentially harmful...Added August 14, 2014
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Black Holes (English)

Can anything escape the gravitational pull of a black hole? A True Book: Space series dives into...Added August 14, 2014
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Epic: U.S. Air Force (English)

 Added August 14, 2014
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Epic: U.S. Coast Guard (English)

 Added August 14, 2014
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Epic: U.S. Marine Corps (English)

 Added August 14, 2014
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Bear Snores On (Spanish)

 Added August 14, 2014
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Energy (English)

A True Book-Physical Science Whether you're an aspiring inventor or an everyday science buff,...Added August 14, 2014
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The Elements (English)

A True Book-Physical Science Whether you're an aspiring inventor or an everyday science buff,...Added August 14, 2014
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Deserts (English)

Look! Up there! In the tree! Is it a bird, a mammal, an insect? From the highest part of the rain...Added August 14, 2014