| Hands-on History (4 titles) |
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| Hard as Nails in History (8 titles) |
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| Haunted or Hoax? (6 titles) |
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| Hidden History (6 titles) |
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| Historic Communities (10 titles) |
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| History Raiders (6 titles) |
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| Hockey Source (4 titles) |
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| Homes Around The World (6 titles) |
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| Horsing Around (6 titles) |
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| How Did That Get Here? (17 titles) |
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| How to Improve at... (10 titles) |
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| Human Habitats (6 titles) |
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| Humans in Space (4 titles) |
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| I can write a book (8 titles) |
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| I Care About (6 titles) |
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| Ideas, Inventions, and Innovators (4 titles) |
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| If I Was A… (4 titles) |
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| If These Fossils Could Talk (4 titles) |
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| I Love the Seasons (4 titles) |
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| Impact on Earth (6 titles) |
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| Important United States Moments (6 titles) |
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| Improving Your Social Skills (6 titles) |
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| In the Footsteps of Explorers (24 titles) |
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| Introduction to Earth's Resources (6 titles) |
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Canada
USA
