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Message-ID: <317737de0901271849j9e9ddefn373ac07886a91a23@mail.gmail.com>
Date: 2009-01-28T02:49:46Z
From: Jorge Ivan Velez
Subject: Random Sample - data frame
In-Reply-To: <bb3714dd0901271844q3b575e03se68ef7f88d056614@mail.gmail.com>

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