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  • Siebert, F. S., Peterson, T., & Schramm, W. (1956). Four theories of the press. University of Illinois Press. (xsd:string)
  • Siebert, F. S., Peterson, T., & Schramm, W. (1956). Four theories of the press. Urbana and Chicago, IL: Univer- sity of Illinois Press. (xsd:string)
  • Siebert, F. S., Peterson, T., & Schramm, W. (1956). Four theories of the press. Urbana, IL: University of Illinois Press. (xsd:string)
  • Siebert, F.S./Peterson, T.B., 1956, Four Theories of the Press. Urbana: Uni- versity of Illinois Press. (xsd:string)
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  • Siebert, F. S., Peterson, T., Schramm, W. (1956). Four Theories of the Press. Urbana and Chicago, IL: Uni- versity of Illinois Press. (xsd:string)
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