Message-ID: <CACexUku1vEcz4xceCngPP_oCrpMzk8A8mYUrAqznLr9CWzzMMw@mail.gmail.com>
Date: 2013-02-24T21:48:00Z
From: Zjoanna
Subject: cumulative sum by group and under some criteria
In-Reply-To: <1361661482.16376.YahooMailNeo@web142605.mail.bf1.yahoo.com>
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