RT Journal Article SR Electronic T1 The economic burden of the global trade in tobacco JF Tobacco Control JO Tob Control FD BMJ Publishing Group Ltd SP 358 DO 10.1136/tc.3.4.358 VO 3 IS 4 A1 Barnum, H. YR 1994 UL http://tobaccocontrol.bmj.com/content/3/4/358.abstract AB