1. 1. WHO Guidelines for theConduct ofTobaccoSmokingSurveys of theGeneralPopulation(1982 ) Report of a WHO meeting held in Helsinki, Finland, 29 November-4 December 1982. WHO/SMO/83.4.
2. 2. SEARO TechnicalPublicationNo. 7 (1985 ) Smoking and Health. Report of a Regional Seminar.