1. Nitrogen dioxide effects on alveolar macrophages;Acton;Arch. Environ. Health,1972
2. Effects of inhalation of 0.12 and 0.25 ppm ozone on the proximal alveolar region of juvenile and adult rats;Barry;Lab. Invest.,1985
3. Relationship between air pollutant levels and hospital adminissions in Southern Ontario;Bates;Canad. J. Publ. Health,1983
4. Lung acid phosphatase reactivity following ozone exposure;Castleman;Lab. Invest.,1973