1983-1730 1983-1730 S1983-17302020000100279 10.14393/er-v27n1a2020-12 Brazil Brazil 00 01 2020 00 01 2020 27 1 279 301

1990 9 19 19 29-42 2008 28 55 55 153-70 2001 1997 2003 2013 2017 53 53 117-26 1997 15 15 2010 115-28 2007 2014