World Health Organisation <br/><br/>
Users' manual for the IPCS health and safety guides 

 - auth., Geneva  1996 
 - vi,127p figs.,tabs. 
<br/><br/><label>ISBN: </label>92-4-154485-6 
<br/><br/><label>Dewey Class. No.: </label>363.1796 WHO/HSG