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| 011 | _a0013-1954 | ||
| 090 | _a8343 | ||
| 100 | _a20170516 frey50 | ||
| 101 | _afre | ||
| 102 | _aFR | ||
| 200 |
_aEducational studies in mathematics ESM _fEditor-in-chief Norma Presmeg |
||
| 207 | _avol 78 n°2 November 2011 | ||
| 210 |
_aHolland _cSpringer |
||
| 215 | _d24 | ||
| 099 | _tSER | ||
| 500 | _aESM | ||