Urban air pollution 1973-1980   / World Health Organization  

 - Geneva:  World Health Organization,  1984 
 - 96p.  
 - Global environment monitoring systems  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution 
<br/><br/><label>Subjects--Index Terms: </label>Environment  
<br/><br/><label>Universal Decimal Class. No.: </label>614.71(1-21)  / M4