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| 222 | _aEL MAESTRO | ||
| 245 | _aLa educación pública en México a través de los mensajes presidenciales : Miguel Alemán Valdés | ||
| 260 | _aMéxico | ||
| 300 | _a233-240 | ||
| 362 | 0 | _a1970 No. 18, may. | |
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