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Telling Time Through the Ages
Telling Time Through the Ages
Author: Rebecca Weber
Approximately 5,000 to 6,000 years ago, people began to make clocks: tools that can precisely mark off equal lengths of time. In this book, you will find out about several types of clocks invented throughout history. You will also discover that you can make some of these clocks yourself by following step-by-step instructions. You will even measu...  more »
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ISBN-13: 9781450906685
ISBN-10: 1450906680
Publication Date: 2011
Pages: 24
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Publisher: Benchmark
Book Type: Paperback
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