1. Epidemiological studies on air pollution and health. Author Ferris BG Jr Subjects Adult, Age Factors, Aged, Asthma etiology, British Columbia, Bronchitis etiology, Dust analysis, Environmental Exposure, Ethnicity, Female, Humans, Male, Middle Aged, Occupational Diseases, Paper, Respiratory Function Tests, Rural Population, Sampling Studies, Sex Factors, Sulfides analysis, Sulfur Dioxide, United Kingdom, United States, Urban Population, Air Pollution, Respiratory Tract Diseases etiology, Smoking Published 1968 Full Text View/download PDF