1. Longitudinal study of lung function in coal miners;Love, R.G.; Miller, B.G.;Thorax,1982
2. Respirable coal mine dust standards and their enforcement under the Federal Coal Mine Health and Safety Act of 1969;Schlick, D.P.,1971
3. Respirable dust in bituminous coal mines in the US;Jacobson, M.,1971
4. The natural history of chronic bronchitis and emphysema. An eight-year study of early chronic obstructive lung disease in working men in London;Fletcher, C.; Peto, R.; Tinker, C.; Speizer, F.E.,1976