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Message-ID: <CAOwh97tZ=36VL-H2KNQrmhTyQv7Q2dJdUXvSFiYugz7oxOK1cQ@mail.gmail.com>
Date: 2011-12-02T17:01:36Z
From: Aurélien PHILIPPOT
Subject: Problem subsetting: undefined columns
In-Reply-To: <4ED8A34D.1030800@knmi.nl>

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