1012-2966 1012-2966 S1012-29662022000100064 10.47993/gmb.v45i1.387 Bolivia Bolivia Bolivia 00 00 2022 00 00 2022 45 1 64 66

1 1985 27 85-91 2 2009 41 862-3 3 2002 41 397-9 4 2005 152 1339-42 5 2020 6 2012 30 4 4 e52-3