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Ringworld
Ringworld
Author: Larry Niven
Del Rey (c) 1970 — Publication date March 1981 — "I myself have dreamed up an intermediate step between Dyson Sphere and planets. Build a ring 93 million miles in radius one Earth orbit which would make it 600 million miles long. If we have the mass of Jupiter to work with, and if we make it a million miles wide, we get a thickness of about a thou...  more »
ISBN: 21604
Pages: 342
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Book Type: Paperback
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