Hummingbird
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Nasty Ways to Go (4 titles)
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Earth
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Animals
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Amazing Moments in Sports (6 titles)
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Black Holes
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Photosynthesis
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The Drafting of the Constitution
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The Lewis and Clark Expedition
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Tough Times to Be a Kid (4 titles)
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U.S. History: Need to Know (6 titles)
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Food Webs
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Cells
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Backfiring Bodies
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Puffer Fish
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Library of Awesome Animals Set Four (6 titles)
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Reproduction
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A Kid's Life in Ancient Egypt
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The Civil War
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Mortal Mistakes
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Tornadoes
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Axolotl
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Space
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Totally Silly Science (4 titles)
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