@book{ Solr-500255, title = {Designing for virtual communities in the service of learning / edited by Sasha Barab, Rob Kling, James Gray.}, series = {Learning in doing: social, cognitive and computational perspectives}, editor = {Barab, Sasha}, editor = {Kling, Rob}, editor = {Gray, James}, address = {Cambridge}, publisher = {Cambridge University Press}, year = {2004}, pages = {451}, }