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author
Sam Carbaugh
Books by Sam Carbaugh
The Civil War: The Struggle that Divided America Timekeeping: Explore the History and Science of Telling Time with 15 Projects Rating: 0 out of 5 stars0 ratingsDiscover the Desert: The Driest Place on Earth Rating: 0 out of 5 stars0 ratingsRobotics: Discover the Science and Technology of the Future with 20 Projects Rating: 0 out of 5 stars0 ratings