Heptaclor 
/ WHO 
. - Genève  : WHO, 2006
. - V-74 p.  ; 30 cm. 
<br/><br/>Bibliogr. 
<br/><br/><label>ISBN: </label>9241530707 
<br/><br/><label>Source: </label> Don 
<br/><br/><label>Universal Decimal Class. No.: </label>546.13