Flowering plants :  evolution and classification of higher categories : symposium, Hamburg, September 8-12, 1976 / 
edited by K. Kubitzki 
 - Wien, Austria :  Springer-Verlag,  1977 
 - viii, 416 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0387814345 
<br/><br/><label>LCCN: </label>77-25200 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Classification--Congresses<br/>Plants--Evolution--Congresses<br/>Phanerogams--Congresses