HORWOOD, R. H <br/><br/>
Inquiry into environmental pollution / 
R. H. Horwood 
 - Toronto  Macmillan  c1973 
 - 116p.: 
<br/><br/> Include index 
<br/><br/><label>ISBN: </label>0770509819 
<br/><br/><label>Dewey Class. No.: </label>301.31 HOR