1981-8106 1981-8106 S1981-81062015000100019 10.2014/jan.abr.v25n48.003 Brazil Brazil 00 04 2015 00 04 2015 25 48 19 36

6 1 1 49-60 13 2 2 239-49 7 2 2 97-110 30 2 2 251-70 34 121 121 169-86 16 20 20 5-14 39 39 147-65 58 301 301 236-44