OB
About the Author
Om Books
Category Ages 6-8
Cover Type Paperback
Type Textbook
Language English
ISBN 9789385609237
Rs. 200
SIMPLE INVENTIONS THAT CHANGED THE WORLD
By Om Books
For which monarch was the first handmade stapling machine invented? When was the safety pin created? What were the toothbrushes in ancient times made of? What were pencils first used for?This book is filled with facts about inventions that seem simple, but paved the way for other bigger discoveries.
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1 formatPaperback
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Rs. 200
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ISBN: 9789385609237
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8 detailsAbout the author
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