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Throwback Thursday: ‘Science Madness’ has 107 20th Century Volumes on Organic, Inorganic & Theoretical Chemistry, the Elements, Fermentations, and More!
— by nicknormal
Filed under: physics, science — 
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Adafruit’s Solder Alloy of Choice: Sn100C #Manufacturing
— by Noah Barrow
Filed under: featured, manufacturing — 
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