LEADER 00684nam0-22002531i-450- 001 990002589710403321 035 $a000258971 035 $aFED01000258971 035 $a(Aleph)000258971FED01 035 $a000258971 100 $a20000920d1960----km-y0itay50------ba 101 0 $aENG 200 1 $aPRODUCTIVITY AND TECHNICAL CHANGE$fDI SALT ER 205 $a$a 210 $as.l.$cUniversity of Cambridge$d1960 700 1$aSalter,$bWilfred E. G.$0105287 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990002589710403321 952 $a21-1-6-RA$bn.i.$fECA 959 $aECA 996 $aProductivity and technical change$944980 997 $aUNINA DB $aING01