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| 035 | _aUPN01000094603 | ||
| 100 | _aRANUCI, Ernest R. | ||
| 222 | _aGRADE TEACHER | ||
| 245 | _aProject : the four color game : a mathematical mystery | ||
| 260 | _aDARIEN, EUA. | ||
| 300 | _a109-110 | ||
| 362 | _a1968 oct. | ||
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| 653 | 0 | _aJUEGO | |
| 653 | 0 | _aMATEMATICAS | |
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