Management of environment  

 - New Delhi:   Wiley Eastern Limited,    1980 
 - xv, 578p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Astronomy 
<br/><br/><label>Universal Decimal Class. No.: </label>628.511.0089080  / M0