Threatened plants. 

 - [London] :  British Museum (Natural History),  c1981. 
 - [12]p. 
 - Publication (British Museum (Natural History)) ;  no.836 .
 - Publication (British Museum (Natural History)) ;  no.836 .
<br/><br/><label>ISBN: </label>0565008366 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rare plants.