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cover image of Who Discovered Electricity?--Beginning Electronics Grade 5--Children's Inventors Books

Who Discovered...

Tech Tron Author
(2020)

cover image of Samuel Morse Invented the Telegraph--U.S. Economy in the mid-1800s Grade 5--Children's Computers & Technology Books

Samuel Morse Invented the...

Tech Tron Author
(2020)

cover image of Elias Howe and His Sewing Machine--U.S. Economy in the mid-1800s Grade 5--Children's Computers & Technology Books

Elias Howe and His Sewing...

Tech Tron Author
(2021)

cover image of How Are Lasers Used Today?--Light and Optics for Grade 5--Children's Physics Books

How Are Lasers Used...

Tech Tron Author
(2021)

cover image of Inventions That Shaped America--US Industrial Revolution Books Grade 6--Children's Inventors Books

Inventions That Shaped...

Tech Tron Author
(2021)

cover image of Earth's Most Powerful Telescopes--Optics for Grade 5--Children's Physics Books

Earth's Most Powerful...

Tech Tron Author
(2022)