Trivedi,  R.K.  <br/><br/>
Practical methods in ecology and social science. 

 -  1987 
<br/><br/> U.G.C. basic. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NO SUBJECT
<br/><br/><label>Dewey Class. No.: </label>581.5  / TRI/Pra