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| 008 | 200505s9999 xx 000 0 und d | ||
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| 040 |
_aEC-QuPUC _bspa |
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| 082 | 0 | 4 | _a001.43/C275m |
| 100 | 1 | _aCastañeda Jiménez, Juan | |
| 245 | 0 | _aMétodos de investigación | |
| 260 |
_aMéxico, México _bMcGraw-Hill _c1995 |
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| 300 |
_a2 v. _b _c24 cm |
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| 650 | 4 | _aINVESTIGACION | |
| 650 | 4 | _aMETODOLOGIA | |
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_c57727 _d57727 |
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