1. The effect of cigarette smoking on the detection of small radiographic opacities in inorganic dust ing habits was examined because smoking information was incomplete (WC Cooper, personal comdiseases;Blanc, P.D.; Gamsu, G.;J Thorac Imaging,1988
2. International classification trial of AIA set of 100 radiographs of asbestos workers;Rossiter, C.E.; Browne, K.; Gilson, J.C.;Br J; Crosbie2" examined chest x Ind Med 1988; 45: 538-43. ray films of 935 workers in 11 plants with exposure to,1986
3. Guidelines for the use of ILO international classification of radiographs for pneumocarbon black; only six had readings of 1/0 to 1/2 but conioses, revised edition;International Labour Organisation,1980
4. Chronic bronchitis: report of the third and fourth stages of the co-ordinated study of chronic bronchitis in the Departstratification in relation to the results was provided. Epstein et al 22 studied the chest x ray films;Bates, D.V.; Gordon, C.A.; Paul, G.I.; Place, R.E.G.; Snidal, D.P.; Woolf, C.R.;Veterans Affairs, Canada. Medical Services Journal of Canada,1966
5. Diagnosis of diseases of the chest. Philaadmissions to an urban university hospital without;Fraser, R.G.; Pare, J.A.P.,1970