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Zack, et al.

Also reccomend going back to the ur-source, Ron Breiger's 1970s' "The
Duality of Persons and Groups." Originally in a journal; reprinted in
Wellman & Berkowitz, _Social Structures_.


  Barry Wellman
  _______________________________________________________________________

   S.D. Clark Professor of Sociology, FRSC NetLab Director
   Department of Sociology 725 Spadina Avenue, Room 388
   University of Toronto Toronto Canada M5S 2J4 twitter:barrywellman
   http://www.chass.utoronto.ca/~wellman fax:+1-416-978-3963
   Updating history: http://chass.utoronto.ca/oldnew/cybertimes.php
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