What If: Mind-Boggling Science Questions for Kids
Robert Ehrlich
ISBN: 978-0-471-17608-4
Paperback
192 pages
April 1998
US $13.95
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ROBERT EHRLICH is a physics professor at George Mason University. He is the author of The Cosmological Milkshake, What If You Could Unscramble an Egg?, and Why Toast Lands Jelly Side Down.