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| 100 | _aBARRY, Willis | ||
| 222 | _aEDUCATIONAL MEDIA AND TECHNOLOGY YEARBOOK | ||
| 245 | _aStrategies for teaching at a distance | ||
| 300 | _a133-137 | ||
| 362 | _a1993 Vol. 19 | ||
| 653 | 0 | _aADMINISTRACION EDUCATIVA | |
| 653 | 0 | _aEDUCACION A DISTANCIA | |
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| 905 | _aArticulo | ||
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