1990-8644 1990-8644 S1990-86442019000200234 Perú 00 06 2019 00 06 2019 15 67 234 240

2008 12 3 3 2009 2014 17 1 1 87-106 2013 2017 2012 10 75-101 2015 2 3 3 187-20 2012 2011 2010 1 1 1