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| 035 | _aUPN01000086095 | ||
| 100 | _aLIU, Leping | ||
| 222 | _aCOMPUTERS IN THE SCHOOLS : | ||
| 245 | _aLogo and geometric thinking : concrete-abstract-concrete thinking / Leping Liu, Rhoda Cummings | ||
| 260 | _aNUEVA YORK, EUA | ||
| 300 | _a95-110 | ||
| 362 | _a1997 Vol.14, nos. 1-2 | ||
| 653 | 0 | _aLOGO | |
| 653 | 0 | _aPENSAMIENTO ABSTRACTO-CONCRETO | |
| 653 | 0 | _aPENSAMIENTO CONCRETO-ABSTRACTO | |
| 653 | 0 | _aPENSAMIENTO GEOMETRICO | |
| 700 | _aCUMMINGS, Rhoda, coaut. | ||
| 904 |
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| 905 | _aArticulo | ||
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