title: RESPIRATORY CONDITIONS IN OUTSIDE WORKERS. REPORT ON OUTSIDE PLANT TELEPHONE WORKERS IN SAN FRANCISCO AND LOS ANGELES.
mesh_terms: D000397:Air Pollution; D002140:California; D006306:Health Surveys; D006801:Humans; D015141:Los Angeles; D009787:Occupational Medicine; D012140:Respiratory Tract Diseases; D012495:San Francisco; D012907:Smoking; D013223:Statistics as Topic; D013689:Telephone
keywords: AIR POLLUTION; CALIFORNIA; HEALTH SURVEYS; INDUSTRIAL MEDICINE; RESPIRATORY TRACT DISEASES; SMOKING; STATISTICS