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| 100 | 1 | _aGray, Eddie | |
| 222 |
_aMT : _bMATHEMATICS TEACHING |
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| 245 | _aSuccess and failore in mathematics : the flexible meaning of symbols as process and concept | ||
| 300 | _a6-10 | ||
| 362 | 0 | _a1993 No. 142, mar. | |
| 653 | 0 | _aALGEBRA | |
| 653 | 0 | _aARITMETICA | |
| 653 | 0 | _aENSEÑANZA | |
| 653 | 0 | _aMATEMATICA | |
| 653 | 0 | _aSIMBOLOS MATEMATICOS | |
| 700 | 1 | _aTall, David, | |
| 700 | 1 | _ecoaut. | |
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| 905 | _aArticulo | ||
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