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|a 9789589287309
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|a Amaya, Alfonso
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| 245 |
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|a Ecopetrol :
|b energía limpia para el futuro.
|
| 250 |
|
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|a Primera edición
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| 260 |
|
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|a Bogotá :
|b Villegas Editores,
|c 2011.
|
| 300 |
|
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|a 571 páginas : ilustraciones ; 33 cm.
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|y BOOK
|z Cr. 28 No. 56-10, Barrio Galán, Barrancabermeja
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