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Bulgarian Mathematical Competitions 2003-2006 Emil Kolev, Peter Boyvalenkov, Nikolai Nikolov, Oleg Mushkarov, Kindle Edition (159 pp.) GIL Publishing House (2007-10-15) None ($9.99 list) | |
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Codes on Euclidean Spheres, Volume 63 (North-Holland Mathematical Library) Hardcover (564 pp.) North Holland (2001-05-11) $165.00 ($165.00 list) |