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  1. 137341
  2. 137342
    Article of journal
    Published in 1992
    Repositorio Repositorio Institucional UPN

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  3. 137343
  4. 137344
  5. 137345
  6. 137346
    Trabajo de grado de pregrado
    Published in 2017
    Repositorio Repositorio Institucional - RIBUC

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  7. 137347
  8. 137348
  9. 137349
  10. 137350
  11. 137351
    Article of journal
    Published in 2004
    Repositorio Universidad Nacional de Colombia

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  12. 137352
  13. 137353
  14. 137354
  15. 137355
  16. 137356
  17. 137357
  18. 137358
  19. 137359
    Article of journal
    Published in 2010
    Repositorio Universidad Nacional de Colombia

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  20. 137360