Taxonomy and ecology :  proceedings of an international symposium held at the Department of Botany, University of Reading / 
edited by V. H. Heywood. 
 - London :  Academic Press,  1973. 
 - ix, 370 p. :  ill. ;  24 cm. 
 - The Systematics Association special volume ;  no. 5 .
<br/><br/><br/>In English and French. 
<br/><br/><label>ISBN: </label>0123469600 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Classification--Congresses.<br/>Botany--Ecology--Congresses.