Improving the Stability of Names : needs and options : procedings of an International Symposium, Kew, 20-23 February 1991 / 
Edited by D.L. Hawsworth. 
 -- Königstein :   Koeltz Scientific Books,   1991 
 - 358 p. -- 
 (Regnum vegetabile  ; 123).
<br/><br/>ISBN 3-87429-328-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Congresos y Asambleas<br/>Horticultura
<br/><br/><label>Universal Decimal Class. No.: </label>635(063)