| Essential Animals (6 titles) |
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| Essential Fitness (6 titles) |
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| Essential Library of American Wars (4 titles) |
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| Essential Library of Countries (18 titles) |
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| Essential Library of Countries Set 2 (12 titles) |
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| Essential Library of the Civil War (9 titles) |
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| Essential Library of the Information Age (6 titles) |
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| Essential Library of World War I (8 titles) |
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| Essential Library of World War II (5 titles) |
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| Essential Literary Genres (8 titles) |
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| Essential Literary Themes (7 titles) |
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| Essential Lives Set 1 (5 titles) |
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| Essential Lives Set 10 (5 titles) |
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| Essential Lives Set 2 (9 titles) |
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| Essential Lives Set 3 (8 titles) |
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| Essential Lives Set 4 (7 titles) |
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| Essential Lives Set 5 (8 titles) |
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| Essential Lives Set 6 (7 titles) |
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| Essential Lives Set 7 (6 titles) |
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| Essential Lives Set 8 (5 titles) |
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