- United States Department of State
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Spy Files examines the science and technology behind the fascinating world of espionage, from...Added August 14, 2014 - This item has been added.
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Vocabulary preview and review pages with pronunciations, glossary, and index- Fun, engaging...Added August 14, 2014 - This item has been added.
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Where did the universe begin? Are black holes real? You'll get a big bang out of superstar...Added August 14, 2014 - This item has been added.
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The relationship between human progress and its effect on the natural environment has long been a...Added August 14, 2014 - This item has been added.
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Learn how hydrofracking works and explores the controversy surrounding its potentially harmful...Added August 14, 2014 - This item has been added.
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Can anything escape the gravitational pull of a black hole?
A True Book: Space series dives into...Added August 14, 2014 - This item has been added.
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Explore the lives of some of the most important leaders and innovators in recent history with this...Added August 14, 2014 - This item has been added.
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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 - This item has been added.
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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