WHO, United Nations Environment Programme & ILO <br/><br/>
Xylenes 

 - auth, Geneva  1997 
 - xvi,147p figs.,tabs. 
<br/><br/><label>ISBN: </label>92-4-157190-X 
<br/><br/><label>Dewey Class. No.: </label>363.7384 WHO/EHC