01120nam0-22003731i-450-99000547454020331620010829120000.0000547454USA01000547454(ALEPH)000547454USA0100054745420010829d1987-------|0enac50------baengUS|||| |||||R & D, patents, and productivityedited by Zvi GrilichesChicagoThe University of Chicago Press1987510 p.23 cm.Produttività industrialeStati UnitiFIChicago338.06Efficienza produttiva21GRILICHES,ZviThe University of Chicago PressITSOL20120104990005474540203316DIP.TO SCIENZE ECONOMICHE - (SA)DS 300 338.06 GRI2188 DISES300 338.06 GRI2188 DISESBKDISES20121027USA01153220121027USA011613R & D, patents, and productivity1128427UNISAUSA7741