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Message-ID: <CALM8yUzXLnVkiCjxKhzZXAOT62wM2osHw39d-emoe9TCn8zdjQ@mail.gmail.com> Date: 2012-08-22T17:40:51Z From: Elvira M.H Subject: Need help In-Reply-To: <CALM8yUznOPUwhRJXvgXOACiypY+xyuKE+K-UyQofyxf9aofPOw@mail.gmail.com> An embedded and charset-unspecified text was scrubbed... Name: no disponible URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20120822/3a52d3d4/attachment.pl>