Katz, Elihu2021-02-162021-02-161987http://hdl.handle.net/11693/68038Public Opinion Quarterly -- 51(4-2), Winter 1987 -- pages 525-545.21 leaves; 525-545EnglishCommunicationResearchSociologyMethodologySocial scienceCON.K2492Communications research since lazarsfeldCuttingHCONTURK0002492