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_aVega Carrillo, Héctor René. _9118248 |
| 245 | _aMéxico y sus energéticos | ||
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_aZacatecas : _bDirección General de Investigación, _c(1987) |
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_a34 p. _b; gráfs. |
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_aCuadernos de investigación _v; 27 |
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_aEnergéticos. _936879 |
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_aCuadernos de investigación _v; 27 _929789 |
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