Joint IUCN-WWF Plant Advisory Group :  Minutes of the Fourth Meeting : World Conservation Centre, Gland, Switzerland, 22-23 May 1987 : Confidential. 

 - S.l. :  S.n.,  1987. 
 - iii, [48] p. 
<br/><br/> Title from cover 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants