The Ultimate Mathematical Challenge: Over 365 puzzles to test your wits and excite your mind. Литагент HarperCollins USD
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First published by HarperCollinsPublishers 2018
FIRST EDITION
© The UK Mathematics Trust 2018
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Source ISBN: 9780008316402
Ebook Edition © November 2018 ISBN: 9780008316419
Version 2018-11-22
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