Report - Investor Relationsri.oi.com.br/oi/web/arquivos/oi_apr_resultados_1q12_eng.pdf · Conference Call May 2012 1Q12 . ... 1Q11 4Q11 1Q12 158 154 202 1Q11 4Q11 1Q12 236 231 205 4Q11 1Q12

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