"Trivedi, Priya Ranjan" <br/><br/>
Prakritik sansadhan sanraksan/by Priya Ranjan Trivedi and Uttam Kumar singh 

 - New Delhi  Gyanda Prakasan  2008 
 - 144p. 
<br/><br/><label>ISBN: </label>9788171392254 
<br/><br/><label>Dewey Class. No.: </label>H 333.7