HAWKSWORTH, David L. Rose, Francis <br/><br/>
Lichens as pollution monitors 

 - London  Edward arnold  1976 
 - 60 p. 
<br/><br/> Includes appendix<br/> 
<br/><br/><label>ISBN: </label>713125551 
<br/><br/><label>Dewey Class. No.: </label>589.1  / HAW