Trivedy,R.K. & Goel,P.K. <br/><br/>
practical methods in ecology and Environmental Sciencs 

 - Karad  Environmental Publications 
 - 12340  Hb 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>574.507