1. Smoking, socioeconomic status and chronic respiratory disease;Higgins, M.W.; Keller, J.B.; Metzner, H.L.;Am Rev Respir Dis,1977
2. Quantitative relationships between cigarette smoking and ventilatory function;Am Rev Respir Dis,1977
3. Studies of the familial aggregation of chronic bronchitis and obstructive airways disease;Tager, I.; Tishler, P.V.; Rosner, B.; Speizer, F.E.; Litt, M.;Int JEpidaeiol,1978
4. Chronic respiratory disease in rural men. An epidemiological survey of;Huhti, E.; Takala, J.; Nuutinen, J.; Poukkula, A.;Hankasalni, Finland. Annals of Clinical Research,1978
5. Prevalence of respiratory abnormalities in a rural and an urban community;Manfreda, J.; Nelson, N.; Cherniack, R.M.;Am Rev Respir Dis,1978