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| 222 | _aREVISTA DE LA ESCUELA NORMAL SUPERIOR DE YUCATAN | ||
| 245 | _aLa academia mexicana de la educación | ||
| 300 | _a54-55 | ||
| 362 | 0 | _a1987 No. 5, feb. | |
| 653 | 0 | _aACADEMIA MEXICANA DE LA EDUCACION | |
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