1983-1730 1983-1730 S1983-17302019000200547 10.14393/er-v26n2a2019-12 Brazil Brazil 00 05 2019 00 05 2019 26 2 547 571

1986 2005 1989 2009 2012 2011 1999 1997 1989 2008 2005 2009 14 2 2 2009 2009 2005 2007