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501Published in 2011Repositorio Universidad Nacional de Colombia
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502Article of journalPublished in 2016Repositorio Universidad Nacional de Colombia
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503Article of journalPublished in 1997Repositorio Universidad Nacional de Colombia
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504Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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505Article of journalPor Ramirez Pisco, Ramiro; Gómez Yarce, Juan Pablo; Guáqueta Restrepo, Juan José; Gaviria Palacio, DanielPublished in 2017Repositorio Universidad Nacional de Colombia
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506Article of journalPublished in 2017Repositorio Universidad Nacional de Colombia
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507Work documentPublished in 1991Repositorio Universidad Nacional de Colombia
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508
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509Published in 2018Repositorio Repositorio EAFIT
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510
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511Trabajo de grado de pregradoEstudio de la Asfaltita Para su Aprovechamiento Como Posible Recurso Energético a Futuro en ColombiaPublished in 2022Repositorio Repositorio Universidad de Santander
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512http://purl.org/coar/version/c_b1a7d7d4d402bccePublished in 2017Repositorio Repositorio UIS
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513Trabajo de grado de pregradoPublished in 2023Repositorio Repositorio UIS
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514Trabajo de grado de pregradoPublished in 2023Repositorio Repositorio UIS
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515http://purl.org/coar/version/c_b1a7d7d4d402bccePublished in 2008Repositorio Repositorio UIS
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516Trabajo de grado de pregradoPublished in 2020Repositorio Repositorio EIA .
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517BookPublished in 2020Repositorio Expeditio: repositorio UTadeo
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518http://purl.org/coar/resource_type/c_c94fPor Gómez García, Angela María; Correa Pérez, Juana G.; Osorio Arias, Andrés Fernando; Bernal Franco, Gladys; González, HéctorPublished in 2012Repositorio Universidad Nacional de Colombia
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519http://purl.org/coar/resource_type/c_c94fPublished in 2002Repositorio Universidad Nacional de Colombia
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520Published in 2013Repositorio Universidad Nacional de Colombia
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