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Message-ID: <CACexUktwVvT9zXiLMpqyBiH_EMNxO1sT1Bjm5GWqtx6YxrBg9g@mail.gmail.com>
Date: 2013-02-10T23:04:02Z
From: Zjoanna
Subject: cumulative sum by group and under some criteria
In-Reply-To: <1360178127.67860.YahooMailNeo@web142602.mail.bf1.yahoo.com>

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