INTERNATIONAL Symposium on lichenology ( 1974: Brist <br/><br/>
Lichenology: progress and problems 
/ organized by The British Lichen Society; edited by D.H.Brown, D.L.Hawksworth, D.H.Brown 
 - ol)     London  Academic Press  1976 
 - xii, 551 p.- 
 - the systematics association special volume; no.8 .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>121367509 
<br/><br/><label>Dewey Class. No.: </label>589.1  / INT