1. Cigarette smoking in pregnancy: its influence on birth weight and perinatal mortality;Butler, N.R.; Goldstein, H.; Ross, E.M.;British Medical Journal,1972
2. Trends in cigarette smoking in the United Kingdom;Capell, P.J.;Health Trends,1978
3. Letter: Breast feeding and mother's education;Last, P.;Lancet,1978
4. Influence of family factors on asthma and wheezing during the first five years of life;Leeder, S.R.; Corkhill, R.T.; Irwig, L.M.; Holland, W.W.; Colley, J.R.T.,1976
5. Preventive and;British Journal of;Social Medicine