1990-8644 1990-8644 S1990-86442022000600189 Bolivia 00 12 2022 00 12 2022 18 89 189 195

2002 2004 2010 1995 2013 2 1 1 199-202 2018 2004 25 25 89-113 2017 28 54 54 188-2015 2018 2017 2019