| 000 | 00672nam a2200241 a 4500 | ||
|---|---|---|---|
| 005 | 20210219153303.0 | ||
| 008 | 991125n 000 0 u | ||
| 035 | _aUPN01000088604 | ||
| 100 | _aUsnick, Virginia E. | ||
| 222 | _aFOCUS ON LEARNING PROBLEMS IN MATHEMATICS | ||
| 245 | _aMultidigit addition : a study of an alternate sequence | ||
| 300 | _a53-62 | ||
| 362 | _a14, No. 3, 1992 | ||
| 505 | _aFebrero 1993 | ||
| 653 | 0 | _aADICION | |
| 653 | 0 | _aCOMPUTACION | |
| 653 | 0 | _aDESARROLLO COGNOSCITIVO | |
| 653 | 0 | _aENSE\197ANZA MATEMATICA | |
| 653 | 0 | _aMETODOS DE ENSE\197ANZA | |
| 653 | 0 | _aNUMEROS ENTEROS | |
| 904 |
_aAC _b026415 |
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| 905 | _aArticulo | ||
| 999 |
_c73107 _d73107 |
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