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  1. 45261
  2. 45262
  3. 45263
  4. 45264
  5. 45265
  6. 45266
  7. 45267
    Article of journal
    Published in 1977
    Repositorio Universidad Nacional de Colombia

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  8. 45268
    Article of journal
    Published in 1967
    Repositorio Universidad Nacional de Colombia

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  9. 45269
    Article of journal
    Published in 1955
    Repositorio Universidad Nacional de Colombia

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  10. 45270
  11. 45271
  12. 45272
  13. 45273
  14. 45274
    Article of journal
    Repositorio Universidad Nacional de Colombia

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  15. 45275
  16. 45276
  17. 45277
  18. 45278
  19. 45279
    http://purl.org/coar/resource_type/c_c94f
    Published in 2011
    Repositorio Universidad Nacional de Colombia

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  20. 45280