Media type: E-Article Title: Thirty Seconds or Thirty Minutes: What Viewers Learn from Spot Advertisements and Candidate Debates Contributor: Just, Marion; Crigler, Ann; Wallach, Lori Published: Oxford University Press (OUP), 1990 Published in: Journal of Communication, 40 (1990) 3, Seite 120-133 Language: English DOI: 10.1111/j.1460-2466.1990.tb02274.x ISSN: 0021-9916; 1460-2466 Origination: Footnote: