00826nam2-22002891i-450-99000373955040332108-7584-759-5000373955FED01000373955(Aleph)000373955FED0100037395520010220d1997----km-y0itay50------baENGUSNet gainexpanding markets through virtual communitiesJohn Hagel 3., Arthur G. ArmstrongBostonHarvard Business School Pressc1997XV, 239 p.25 cmUSBostonHagel,John <3.>381670Armstrong,Arthur G.141760ITUNINARICAUNIMARCBK9900037395504033211-6-383-TI7189ECAECANet gain509160UNINA