RT Journal Article SR Electronic T1 Smoking Habits of School Children JF British Journal of Preventive & Social Medicine JO Br J Prev Soc Med FD BMJ Publishing Group Ltd SP 1 OP 4 DO 10.1136/jech.13.1.1 VO 13 IS 1 A1 , YR 1959 UL http://jech.bmj.com/content/13/1/1.abstract AB