00716nam0-22002531i-450 99000279079040332120240104160146.0000279079FED01000279079(Aleph)000279079FED0120000920d1955----km-y0itay50------baengUSFoundations of Productivity analysis.by G OLD BELA.PittsburgUniversity of Pittsburgh Press1955.xi, 303 p.22 cmGold,Bela145982ITUNINARICAUNIMARCBK990002790790403321C3-P17-49-RAS.I.ECAECAFoundations of Productivity analysis421287UNINA