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1 |
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Amazing inventions /
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2 |
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America : heritage and culture /
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3 |
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Ancient civilizations /
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4 |
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Commnuities change /
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5 |
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Communities /
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6 |
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Culture : expressions around the world /
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7 |
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How America works /
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8 |
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Mapping our world /
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9 |
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People and the environment /
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10 |
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Producers and consumers /
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