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Joaqun Nin Posadas Firma.svg en Signature of Joaqun Nin Posadas an Argentine physician and teacher es Firma de Joaqun Nin Posadas un mdico docente argentino JoaqunNinPosadasFirma UTC JoaqunNinPosadasFirma derivative work Mr Ajedrez talk Vector graphic Mr Ajedrez JoaqunNinPosadasFirma PDold Original upload log This image