[R-es] Identificar pares de valores en distintas filas
An embedded and charset-unspecified text was scrubbed... Name: no disponible URL: <https://stat.ethz.ch/pipermail/r-help-es/attachments/20140306/c7ce335c/attachment.pl>
An embedded and charset-unspecified text was scrubbed... Name: no disponible URL: <https://stat.ethz.ch/pipermail/r-help-es/attachments/20140306/c7ce335c/attachment.pl>