Air pollution may be defined as the presence in
the air (outdoor atmosphere) of one or more contaminants or
combinations thereof in such quantities and of such durations as
may be or tend to be injurious to human, animal or plant life, or
property, or which unreasonably interferes with the comfortable
enjoyment of life or property or conduct of business.
جهت دانلود اینجا کلیک کنید