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This is the 40the annivesary year of Ron Breiger's great "Duality of 
Persons and Groups": Social Forces 1974 (or in Wellman-Berkowitz _Social 
Structures_ book). Undoubtedly, one of the articles I cite the most.
Yay, Ron

   Barry Wellman
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                      Faculty of Information (iSchool)
   University of Toronto                          Toronto Canada M5S 3G6
   http://www.chass.utoronto.ca/~wellman          twitter: @barrywellman
   NETWORKED:The New Social Operating System. Lee Rainie & Barry Wellman
   MIT Press            http://amzn.to/zXZg39      Print $15  Kindle $9
                  Old/NewCyberTimes http://bit.ly/c8N9V8
   ________________________________________________________________________

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