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RE: st: AW: RE: AW: how to identify unique id variables within groups?


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: AW: RE: AW: how to identify unique id variables within groups?
Date   Wed, 20 May 2009 16:33:58 +0100

Yes indeed. Ars longa, vita brevis. 

Nick 
n.j.cox@durham.ac.uk 

Martin Weiss




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