| 000 | a | ||
|---|---|---|---|
| 001 | 10686 | ||
| 011 | _a1863-9690 | ||
| 090 | _a10686 | ||
| 099 | _tSER | ||
| 100 | _a20190927 frey50 | ||
| 101 | _aeng | ||
| 102 | _aXD | ||
| 200 |
_aZDM Mathematics Education _eMathematical Evidence and argument _fEditor in chief : Gabriele Kaiser _gGuest Editors: Christine Knipping, Andrew Aberdein and Maria Alessandra Mariotti |
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| 207 | _aVolum 51 Issue 5 - October 2019 | ||
| 210 |
_aHeidelberg _cSpringer _d2019 |
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| 215 |
_ap.717-868 _d27cm. |
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