0122-0667 0122-0667 S0122-06672019000200149 Colombia 00 12 2019 00 12 2019 25 2 149 156

1 2007 978-58 2 1997 13 2 2 227-36 3 2015 17 6 6 912-24 4 Alcaldía de Medellín 5 40 9 9 612-4 6 2016 144 3 3 382-7 7 2008 21 2 2 78-81 8 2014 28 1 1 16-23 9 2016 22 2 2 341-5 10 2015 192 640-3 11 2004 79 1 1 96-100