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Crossing Numbers on Phoebe

Martin Gardner

First published March 1982
Type Short Fiction
Length Short Story
Series SF Puzzles

Date Publication Publisher Type Page
March 1982 Cover Isaac Asimov's Science Fiction Magazine, March 15, 1982 Davis Publications MAGAZINE 42
1986 Cover Puzzles from Other Worlds: Fantastical Brainteasers from Isaac Asimov's Science Fiction Magazine Oxford University Press Collection 33