World Health Organization, United Nations Environment programme & ILO <br/><br/>
Boron 

 - auth, Geneva  1998 
 - xviii,201p figs.,tabs. 
<br/><br/><label>ISBN: </label>92-4-157204-3 
<br/><br/><label>Dewey Class. No.: </label>363.7384 WHO/EHC