World Health Organisation Geneva 

 - Geneva  WHO  1998 
 - xxi,303p. 
 - Enviormental Health Criteria,205 .
<br/><br/> International Programme on health safety 
<br/><br/><label>ISBN: </label>92-4-157205-1 
<br/><br/><label>Universal Decimal Class. No.: </label>547.756  / POL