United Nations Environment Programme and World Health Organization <br/><br/>
Urban air pollution in megacities of the world: Earthwatch global environment monitoring system 

 - Oxford  Blackwell  1992 
 - 232p. 
<br/><br/><label>ISBN: </label>063118404X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment<br/>Metropolitan Areas<br/>Urbanisation<br/>Air Pollution
<br/><br/><label>Dewey Class. No.: </label>X91 Un8