1. Industrial bronchitis;Morgan, W.K.C.;Br J Ind Med,1978
2. Role of dust in the working environment in development of chronic bronchitis in British coal miners;Rogan, J.M.; Attfield, M.D.; Jacobsen, M.; Rae, S.; Walker, D.D.; Walton, W.H.;Br J Ind Med,1973
3. Chronic bronchitis and dust exposure in British coal miners;WHInhaled, Walton,1971
4. Longitudinal study of lung function in coal miners;Love, R.G.; Miller, B.G.;Thorax,1982
5. Prevalence of bronchitis and airway obstruction in American bituminous coal miners;Kibelstis, J.A.; Morgan, E.J.; Reger, R.; Lapp, N.L.; Seaton, A.; Morgan, W.K.C.;Am Rev Respir Dis,1973