1870-4654 1870-4654 S1870-46542020000100273 10.22201/iij.24487872e.2020.20.14477 Venezuela Mexico 00 12 2020 00 12 2020 20 273 314

2018 CIADI 2019 CNUDMI CNUDMI 146 CNUDMI CNUDMI 2011 2010 2010 2009