RT Journal Article SR Electronic T1 Animals and butts: Minnesota's media campaign against tobacco JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 271 DO 10.1136/tc.2.4.271 VO 2 IS 4 A1 K. C. Harty YR 1993 UL http://tobaccocontrol.bmj.com/content/2/4/271.abstract AB