World Health Organization <br/><br/>
Air Quality Guidelines. Global Update 2005. 

 -  WHO Europe  2006 
 - 484 
<br/><br/><label>ISBN: </label>92-89021926 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public Health 
<br/><br/><label>National Library of Medicine Call No.: </label>WA 754 W 2006