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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

                      Faculty of Information (iSchool)
   University of Toronto                          Toronto Canada M5S 3G6          twitter: @barrywellman
   NETWORKED:The New Social Operating System. Lee Rainie & Barry Wellman
   MIT Press        Print $15  Kindle $9

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