00704nam0-22002771i-450-990003194540403321000319454FED01000319454(Aleph)000319454FED0100031945420000920d1960----km-y0itay50------baengITSocial ChangeJohn Eric Nordskog.New YorkMcGraw-Hill1960.VII, 423 p.24 cm1313014330Nordskog,John Eric127718ITUNINARICAUNIMARCBK99000319454040332113130 NOR017327SESSESSocial Change453380UNINA