Singh, Pankaja. <br/><br/>
Basic environments physics 

 - 2nd 
 - New delhi  Pragati prakashan  2016 
 - 132p. 
<br/><br/><label>ISBN: </label>9789350064764 
<br/><br/><label>Subjects--Personal Names: </label><br/>science
<br/><br/><label>Dewey Class. No.: </label>530.15  / SIN