Senevirathne, Rohini De Alwis Occupational health : a handbook for doctors - Colombo: Dept. of Community Medicine, University of Colombo; 1998. - xiv, 151p.; 20cm. ISBN: 9559021133 Subjects--Topical Terms: Lung diseasesOphthalmic diseaseFitnessSkin diseases Dewey Class. No.: 613.62 / OCC