الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Air pollution is the presence in the outdoor atmosphere of one or more contaminants in sufficient quantity and duration to be injurious to human health and welfare, to animal and plant life and to the enjiyment of life and property.
Air pollution is a mixture of solids and gases dispersed rapidly by meteorological and topographic conditions. when pollutants become concentrated because of a lack of movement of air masses air pollution disasters may occur. Also, otherewise harmless emissions into the atmosphere may become serious air pollutants when they combine with other materials present in the air.