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Message-ID: <3aaf1a030910312352p76e973bdk2e738f940d2aa597@mail.gmail.com> Date: 2009-11-01T06:52:45Z From: milton ruser Subject: counting frequencies across two columns In-Reply-To: <4AED28B9.90105@email.unc.edu> An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20091101/08469419/attachment-0001.pl>