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Switching It Up (Free PDF Download)
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Thermodynamics (Free PDF download)
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Today in Energy (Free PDF Download)
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Transportation Exploration (Free PDF download)
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Transportation Trio (FREE PDF Download)
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Understanding Coal (Free PDF Download)
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What is Energy?
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Wind for Schools (Free PDF Download)
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Wonders of Water (Elementary)
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Wonders of Wind (Elementary)
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ZAP! That Energy Use (Free PDF Download)
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