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Marx Generator Kit 10 Stage High Voltage DIY Lightning Experiment Educational Model - Enginediy |
$139.99 |
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$139.99 |
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ENJOMOR Vintage 4-Blade Heat Powered Thermal Stove Fan Stirling Engine Physics Science Experiment Toy |
$149.99 |
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$149.99 |
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Stirling Engine Kit Tractor Vacuum Engine Motor Model for Gift Collection - Enginediy |
$199.99 |
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$199.99 |
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Multi Stage Steam Turbine Physics Equipment Demonstration Educational Toy Enginediy |
$34.99 |
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$34.99 |
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