Problem Department
| Autor: | Grossman, Howard D., Arena, J. Frank, Starke, E. P., MacKay, D. L., Thomas, Paul D., Szmojsz, J., Court, N. A., Hoff, E. |
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| Zdroj: | National Mathematics Magazine, 1943 Dec 01. 18(3), 130-136. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
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