00526nam a2200157Ia 450000100060000000300050000600500170001100800410002810000280006924500580009726000490015530000210020441000760022565000370030165000300033880366BIBL20160527202726.0771205c19601966xx            000 0 eng d10aSalter, W. E. G.2Local10aProductivity and technical changecby W. E. G. Salter0 aCambridgebCambridge University Pressc1960.  aix, 198 p.bill.10aCambridge.bUniversity.bDepartment of Applied Economics.tMonographv6 0aTechnological innovations2Local 0aLabor productivity2Local