Trivedi, P.R. <br/><br/>
Natural environment and constitution of India   
by P R Trivedi, Piare Lal Sharma and K N Sudarshan 
 - New Delhi  Ashish  1994 
 - vii, 491p. 
<br/><br/><label>ISBN: </label>8170246407 
<br/><br/><label>Dewey Class. No.: </label>344.046  / N94