World Health Organization <br/><br/>
WHO guidelines on good agricultural and collection practices (GACP) for medicinal plants 

 - World Health Organization, Geneva  2003 
 - vi,72 
<br/><br/><label>ISBN: </label>92-4-154627-1 
<br/><br/><label>Dewey Class. No.: </label>581.634 W.H.O.