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GREEN BOOK OF MATHEMATICAL PROBLEMS by HARDY, KENNETH (Paperback - 1997) ISBN: 9780486695730 Subject: SCIENCE & NATURE Publisher: DOVER USA |
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RED BOOK OF MATHEMATICAL PROBLEMS by WILLIAMS, KENNETH S. (Paperback - 1996) ISBN: 9780486694153 Subject: SCIENCE & NATURE Publisher: DOVER PUBLICATIONS USA |
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