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| 245 | 0 | 0 | _aOil shale an historical, technical, and economic study |
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_aWashington _bEstados Unidos. Department of the Interior _c1924 |
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| 270 | _a16/09/2025 ; 01/09/2003 | ||
| 300 | _a199 p. | ||
| 500 | _aDonación de la familia del Ingeniero Bernardo Rikles. | ||
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_aGavin, Martin J. _924130 |
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_aEsquistos bituminosos _924131 |
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