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The Quick Brown Fox Cub
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The Railroad
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5.9 |
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The Ray
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There Goes Your Nose!
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The Reluctant Rajput
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3.6 |
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The Remarkable Respiratory System: How do my lungs work?
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4.8 |
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The Renaissance in Europe
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8.2 |
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The Return of the Color War Ghost
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The Revolution in Industry
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4.5 |
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The Rhine: Europe's River Highway
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6.7 |
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The Rocky Mountains
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7.4 |
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The Role of Religion in the Early Islamic World
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6.7 |
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The Role of Water on Earth
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The Sahara Desert
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7.2 |
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The Salem Witch Trials
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5.5 |
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The Science Behind the Athlete (6 titles)
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NEW
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The Science of Catastrophe (4 titles)
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The Science of Computers
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6.3 |
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The Science of Light Waves
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The Science of Nutrition (6 titles)
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The Science of Sound Waves
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The Scout
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The Secret War
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5.3 |
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The Shape of Good Nutrition: The Food Pyramid
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5.1 |
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Canada
USA
