978-0-395-17517-0 / 0395175178

Please Explain.

by Asimov, Isaac

Publisher:Houghton Mifflin (Juv)



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About the book:

Answers to questions in various scientific disciplines, e.g., "What are pulsars?", "Is the universe running down?", "What is the difference between a brain and a computer?", and "Why did the dinosaurs die off?".

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