00502nam a2200133Ia 4500008004100000040001700041082002500058100001800083245005200101260004800153300001400201440007400215650007900289190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta338.018bS177P  aSalter, W E G 0aProductivity and technical changecW E G Salter  aCambridgebCambridge University Pressc1960  aix, 198p.  aUniversity of Cambridge Department of Applied Economics Monographs; 6  aIndustrial productivity; Production (Economic theory); Technology transfer