Anand, Vaishali. <br/><br/>
Environment and ecology :  for civil services preliminary and main examination and other competitive examinations / 
Anand, Vaishali. 
 - xx, 468 p. ; 23 cm. 
<br/><br/> Includes glossary. 
<br/><br/><label>Dewey Class. No.: </label>574.05076  / ANA