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Message-ID: <BANLkTi=W4yHwr3xke7+a9-2tUPe2ra9DPg@mail.gmail.com>
Date: 2011-04-28T21:06:35Z
From: Benjamin Caldwell
Subject: subset without removing NAs
In-Reply-To: <EF859EEF-723A-432B-8A03-F2E1D597A90E@comcast.net>

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