Johnston, R.J <br/><br/>
Environmental problems  :nature, economy and state 
R.J. Johnston 
 - Daryaganj  CBS publishers  1992 
 - x,211p. 
<br/><br/> Includes index and bibliography 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental problems<br/>Environmental protection
<br/><br/><label>Dewey Class. No.: </label>363  / JOE