Ключевые слова:
Theatres, Sampling methods, Air pollution, Sports facilities, Cabs, Kitchens, Pollution control, Bathrooms, Habitable rooms, Basements, Measurement, Bedrooms, Libraries, Internal, Hospitals, Impurities, Nursery schools, Restaurants, Leisure, Bars (refreshment facilities), Duration, Schools, Workshops, Cinemas, Atmosphere, Domestic facilities, Vehicles, Buildings open to the public, Air