Douglas, David <br/><br/>
Unit 12 Environmental degradation 

 - Walton Hall  ; The Open University Press  , 1982 
 - 36p. 
<br/><br/><label>ISBN: </label>0335171079  £8.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Pollution<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>363.7  / DOU