00830nam0-22003011i-450-9900031276404033210-86187-842-6000312764FED01000312764(Aleph)000312764FED0100031276420000920d1990----km-y0itay50------baitaITMeasuring the Dynamics of Technological Changeedited by Jon Sigurdson.LondonNew YorkFrances Pinter1990.XVI, 227 p.23 cmG/1.4H/2.112Sigurdson,JonITUNINARICAUNIMARCBK990003127640403321G/1.4 MEA/N.A.9188SESSESMeasuring the Dynamics of Technological Change456500UNINAING01