1982-9949 1982-9949 S1982-99492021000100233 10.17058/rea.v29i1.13785 Brazil Brazil 00 01 2021 00 01 2021 29 1 233 247

1976 2006 21 45 45 3-30 2009 7 2017 2016 2010 1977 2 2009 52 1 1 123-59 2009 2010 13 2000 2 2006 123-49