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Science Q&A

The Handy Science Answer Book, compiled by the Science and Technology Department of the Carnegie Library of Pittsburgh, Visible Ink Press
Covers science and technology topics, from the inner workings of the human body to outer space, and from math and computers to planes, trains and automobiles.
On this page: What is the Pythagorean theorem? to What is widely considered to be one of the earliest celestial observatories?.
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Title Index: A B C D F H I O P S T U W
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