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H-Net: Humanities and Social Sciences Online
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Exploring Nature Science Education Resource
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Information Unlimited - Science Projects, Electronics Kits, Lasers, Tesla Coils, High Voltage Engineering
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WorldWideScience
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Leading Medical School | Southwest College of Naturopathic Medicine | SCNM.edu
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Custom Electronics, PWM Circuits, Induction Heating, and DIY Science Projects - RMCybernetics
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The Kid Should See This - Smart videos for curious minds of all ages