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The Britannica Guide to Theories and Ideas That Changed the Modern World

$47.00

There was a time when people assumed that the world was flat. Once an alternate theory was proposed, however, that conceit was challenged and, eventually, disproved. In short, theories and ideas can be potent agents of change, none more so than those that are extensively detailed in this book.

Series: Turning Points in History

Interest Level: Grades 9-12

Reading Level: Z

Lexile Level: 1360

ISBN: 9781615300631 (E-book)

Copyright: ©2010

Pages: 304


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