| Simple Machines (6 titles) |
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| Sky Lights (6 titles) |
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| Slavery in America (4 titles) |
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| Sneakerheads (6 titles) |
New! Spring 2025 |
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| Sonic the Hedgehog Set 2 (6 titles) |
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| South American Animals (6 titles) |
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| Space Crusaders (6 titles) |
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| Space Objects (6 titles) |
New! Spring 2025 |
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| Space Technology (6 titles) |
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| Special Reports Set 1 (8 titles) |
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| Special Reports Set 2 (8 titles) |
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| Special Reports Set 3 (8 titles) |
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| Special Reports Set 4 (8 titles) |
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| Special Reports Set 5 (1 title⁎) |
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| Special Reports Set 6 (8 titles) |
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| Special Reports Set 7 (2 titles) |
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| Spiders (6 titles) |
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| Spooky Animals (6 titles) |
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| Spooky Spots (6 titles) |
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| Sports Biographies Set 1 (6 titles) |
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