1982-9949 1982-9949 S1982-99492014000100122 10.17058/rea.v22i1.0122 Brazil 00 06 2014 00 06 2014 22 1 122 147

21 21 24 24 1 1 1 40-54 2 4 4 25-35 11 16/17 16/17 08 11 11 17