Guidelines on the conservation of medicinal plants 

 - Geneva :  World Health Organization,  1993 
 - 50 p. ;  30 cm. 
<br/><br/><label>ISBN: </label>2831701368  RM16.28 
<br/><br/><label>LCCN: </label>94-221630 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicinal plants<br/>Plant conservation