  Dr Ecco's Cyberpuzzles 36 Puzzles for Hackers and Other Mathematical Detectives (Hardcover) → Paperback ISBN-13: 9780393051209 ISBN-10: 039305120X Genres: Computers & Technology, Science & Math, Humor & Entertainment ?  Dr Ecco's Cyberpuzzles 36 Puzzles for Hackers and Other Mathematical Detectives (Paperback) → Hardcover ISBN-13: 9780393325416 ISBN-10: 0393325415 Genres: Computers & Technology, Science & Math, Engineering & Transportation ?  Natural Computing Dna Quantum Bits and the Future of Smart Machines (Paperback) ISBN-13: 9780393336832 ISBN-10: 0393336832 Genres: Computers & Technology, Science & Math ?   The Puzzler's Elusion a Tale of Fraud Pursuit and the Art of Logic (Paperback) ISBN-13: 9781560258315 ISBN-10: 1560258314 Genres: Nonfiction, Humor & Entertainment ?  Puzzling Adventures Tales of Strategy Logic and Mathematical Skill (Paperback) ISBN-13: 9780393326635 ISBN-10: 0393326632 Genres: Science & Math, Humor & Entertainment ? |
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