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Sprints, Hurdles, and Other Track Events
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6.6 |
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Stars, Galaxies, and the Milky Way
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6.5 |
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Star Spotters: Telescopes and Observatories
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6.2 |
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States of Matter
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5.5 |
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State Your Case (6 titles)
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St. Augustine Lighthouse
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NEW
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Stealthy Ninjas
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Steeplechase
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4.8 |
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Stegosaurus
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STEM-gineers (4 titles)
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Stephen Hawking
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Steroids
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8.6 |
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Steve Jobs: Visionary Entrepreneur of the Digital Age
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Steve Nash
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6.4 |
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Stink of the Century
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Stinky Skunks and Other Animal Adaptations
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5.7 |
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Stock Car Secrets
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6.1 |
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Stone Age Geometry (6 titles)
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Stone Age Geometry: Circles
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4.3 |
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Stone Age Geometry: Cubes
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4.3 |
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Stone Age Geometry: Lines
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4.4 |
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Stone Age Geometry: Spheres
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4.5 |
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Stone Age Geometry: Squares
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4.1 |
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Stone Age Geometry: Triangles
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4.3 |
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Canada
USA
