Message-ID: <CACexUksLFtu5O6fQPO8h2dsZ6yMYL7OozJ-uwZ1ruWeuVSfszg@mail.gmail.com>
Date: 2013-02-05T18:37:47Z
From: Zjoanna
Subject: cumulative sum by group and under some criteria
In-Reply-To: <1360076002.40973.YahooMailNeo@web142602.mail.bf1.yahoo.com>
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