Eyewitness invention kit
By Lionel Bender
Subjects: Inventions, Technology
Description: Explores such inventions as the wheel, gears, levers, clocks, telephones, and rocket engines.
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Subjects: Inventions, Technology
Description: Explores such inventions as the wheel, gears, levers, clocks, telephones, and rocket engines.
You must log in to leave comments.