00803nam0-22002891i-450-990003195360403321000319536FED01000319536(Aleph)000319536FED0100031953620000920d1947----km-y0itay50------baENGITSocial ResearchA Study in Methods of Gathering Databy George A. LundbergSecond editionNew YorkLongmans Green and Co.1947xx, 426 p.22 cmSociologiaMetodologia11130Lundberg,George AndrewITUNINARICAUNIMARCBK99000319536040332111130 LUN24514/FSESSESSocial Research453280UNINA