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Message-ID: <AANLkTikfFuKMLuwJYzyZzYStr4uc5aTB=HSHAp6OPRr9@mail.gmail.com>
Date: 2011-01-25T09:32:02Z
From: Dennis Murphy
Subject: Subtracting elements of data.frame
In-Reply-To: <381460.60149.qm@web120318.mail.ne1.yahoo.com>

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