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| 041 | 0 | _aENG | |
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_aLB 1028 _bR26 |
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| 100 | _aRand Corporation | ||
| 245 | 1 | 0 |
_aHow effective is schooling? : _ba critical review of research / _cby Harvey H. Averch, Stephen J. Carroll, Theodore S. Donaldson ; foreword by H. Thomas James |
| 260 |
_aEnglewood Cliffs, N.J. : _bEducational Technology, _cc1974 |
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| 300 |
_a258 p. ; _c28 cm |
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| 650 | 0 |
_aEducación. _xInvestigación - _zEstados Unidos. |
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| 650 | 0 |
_aEducación _zEstados Unidos |
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_851 _gRonald RUIZ |
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