Hawksworth, D. L. <br/><br/>
Lichens as pollution monitors / 
[by] David L. Hawksworth, Francis Rose. 
 - London :  Edward Arnold,  1976. 
 - [4], 60 p. :  ill., maps ;  22 cm. 
 - Institute of Biology's studies in biology ; no. 66 .
 - Institute of Biology's studies in biology ;  no. 66. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0713125543 :  0713125551  £2.80. 
<br/><br/><label>LCCN: </label>77366465  
<br/><br/><label>Nat. Bib. No.: </label>GB77-03002 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lichens--Effect of air pollution on.<br/>Lichens--Effect of air pollution on.--Great Britain<br/>Plant indicators.<br/>Air--Pollution--Measurement.--Great Britain
<br/><br/><label>LC Class. No.: </label>QK581  / .H35 
<br/><br/><label>Dewey Class. No.: </label>589.1045  / HAL