0123-921X 0123-921X S0123-921X2017000300032 10.14483/udistrital.jour.tecnura.2017.3.a02 Colombia Colombia Colombia Colombia 00 09 2017 00 09 2017 21 53 32 46

2014 551 1965 1 16-20 2007 1998 2009 13 25 25 48-58 2015 15 2 2 47-57 1999 7 3 3 328-42