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_a370.7 _bSCH 1978 |
| 100 | 1 | _aShaefer, Robert J. | |
| 245 | 1 | 3 |
_aLa escuela como centro de investigacion _cRobert J. Shaefer |
| 264 |
_aMéxico _bDiana _c1978 |
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| 300 | _a115 p. | ||
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_aEducación _xinvestigación |
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| 950 | _c20090311 | ||
| 950 | _c20111027 | ||
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