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Created : 2004-11-03 Updated: 2023-10-14

Series : "School Mathematics as Mathematics" "What is Number?" This consists of the following two books: 　"What is Number?(2) ─ Answer to 'What is Number?'" 　"What is Number?(1) ─ How various numbers are created" Reason why these two books come "Introduction to Training"

Created : 2007-06-02 Updated: 1970-01-01 Download (PDF, 0 MB) → Web site

Created : 2004-11-03 Updated: 1970-01-01 Download (PDF, 0 MB) → Web site

Created : 2007-06-22 Updated: 1970-01-01 Download (PDF, 0 MB) → Web site

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