World Health Organization <br/><br/>
Pyrrolizidine alkaloids 

 - World Health Organization, Geneva  1988 
 - 345 
<br/><br/><label>ISBN: </label>92 4 154280 2 
<br/><br/><label>Dewey Class. No.: </label>R363.7384 W.H.O./E.H.C.