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18221
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18222
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18223Article of journalPublished in 1998Repositorio Universidad Nacional de Colombia
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18224Article of journalPublished in 1999Repositorio Universidad Nacional de Colombia
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18225Article of journalPublished in 1996Repositorio Universidad Nacional de Colombia
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18226Doctoral thesisPor Zhang, HanwenPublished in 2014Repositorio Universidad Nacional de Colombia
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18227Article of journalPublished in 2016Repositorio Universidad Nacional de Colombia
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18228
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18229Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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18230
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18231Article of journalPublished in 2002Repositorio Universidad Nacional de Colombia
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18232Article of journalPublished in 1999Repositorio Universidad Nacional de Colombia
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18233Article of journalPor Campos, D.Published in 1992Repositorio Universidad Nacional de Colombia
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18234Article of journalPublished in 2005Repositorio Universidad Nacional de Colombia
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18235
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18236http://purl.org/coar/resource_type/c_c94fPublished in 2013Repositorio Universidad Nacional de Colombia
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18237Article of journalPublished in 1992Repositorio Universidad Nacional de Colombia
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18238Article of journalPublished in 1995Repositorio Universidad Nacional de Colombia
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18239
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18240