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A Bridge Goes Over
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A Dam Holds Back
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A Dome Stays Strong
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Adventure Homes
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4.8 |
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Aerospace Engineering and the Principles of Flight
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7.0 |
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Agricultural Engineering and Feeding the Future
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7.0 |
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Agricultural Inventions: At the Top of the Field
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5.9 |
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A House Gives Shelter
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Air Combat
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7.2 |
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Aircraft Carriers: runways at sea
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5.4 |
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Airplanes
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NEW
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Air War
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4.5 |
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Alien Life Search - quest for extraterrestrial organisms
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A Math Journey Through Space
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Amazing Applications and Perfect Programs
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6.4 |
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Amazing Electricity
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Amazing Flights - The Golden Age
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6.7 |
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Amazing Forces and Movement
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Amazing Materials
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Amazing NASCAR Races
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6.0 |
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Ancient Homes
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5.6 |
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Ancient Underground Structures
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5.9 |
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Animal Homes
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5.3 |
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Animal Homes
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4.3 |
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Canada
USA
