0101-7136 0101-7136 S0101-71362014000100179 10.5216/ia.v39i1.18783 Brazil Brazil 00 04 2014 00 04 2014 39 1 179 197

10 10 209-25 111 111 151-71 35 35 10-6 21 72 72 1 1 217-33 29 29 152-64