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_aLB1028 _bH38 |
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| 100 |
_aHayman, John L., _eautor |
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| 245 | 1 | 0 | _aInvestigacion y educacion |
| 264 | 1 |
_aBuenos Aires : _bPaidos, _cc1969 |
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| 300 | _a194 páginas | ||
| 650 | 4 |
_aEducación _xInvestigación |
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| 336 |
_atexto _2rdacontent |
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_asin medio _2rdamedia |
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_avolumen _2rdacarrier |
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