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| 035 | _aUPN01000090708 | ||
| 100 | 1 | _aNemirovsky, Ricardo | |
| 222 | _aJOURNAL OF MATHEMATICAL BEHAVIOR | ||
| 245 | _aOn ways of symbolizing : the case of Laura and the velocity sign | ||
| 300 | _a389-422 | ||
| 362 | 0 | _a1994 Vol. 13, no. 4, dec. | |
| 653 | 0 | _aAPRENDIZAJE | |
| 653 | 0 | _aMATEMATICA | |
| 653 | 0 | _aSIMBOLOS MATEMATICOS | |
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| 905 | _aArticulo | ||
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