Ogilvy, S. C. (1972). Tomorrow's math: Unsolved problems for the amateur (2nd ed.). Oxford University.
Chicago Edition CitationOgilvy, Stanley C. Tomorrow's Math: Unsolved Problems for the Amateur. 2nd ed. New York: Oxford University, 1972.
Deismireacht MLAOgilvy, Stanley C. Tomorrow's Math: Unsolved Problems for the Amateur. 2nd ed. Oxford University, 1972.
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