Publicado: 2019-12-01

DOI: https://doi.org/10.29035/pyr.16.9
DOI: https://doi.org/10.29035/pyr.16.23
DOI: https://doi.org/10.29035/pyr.16.45
DOI: https://doi.org/10.29035/pyr.16.69
DOI: https://doi.org/10.29035/pyr.16.81
DOI: https://doi.org/10.29035/pyr.16.99
DOI: https://doi.org/10.29035/pyr.16.109