LEADER 00830nam0-22003011i-450- 001 990003127640403321 010 $a0-86187-842-6 035 $a000312764 035 $aFED01000312764 035 $a(Aleph)000312764FED01 035 $a000312764 100 $a20000920d1990----km-y0itay50------ba 101 0 $aita 102 $aIT 200 1 $aMeasuring the Dynamics of Technological Change$fedited by Jon Sigurdson. 210 $aLondon$aNew York$cFrances Pinter$d1990. 215 $aXVI, 227 p.$d23 cm 676 $aG/1.4 676 $aH/2.112 702 1$aSigurdson,$bJon 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990003127640403321 952 $aG/1.4 MEA/N.A.$b9188$fSES 959 $aSES 996 $aMeasuring the Dynamics of Technological Change$9456500 997 $aUNINA DB $aING01