1726-8958 1726-8958 S1726-89582022000100059 Bolivia 00 00 2022 00 00 2022 28 1 59 63 1. 2015 19 177-82 2. 2011 3. 2004 Volumen 7 Suplemento 2 Suplemento 2 4. 2004 5. 2014 20 1 1 59-60 6. 2004 7. 2007 81 2 2 170-7 8. 2009 52 6 6