Chopra, D.V. <br/><br/>
Focus on Science & Technology : 
Chopra, D.V. 
 - New Delhi  Pearl Publishing House  n.d. 
 - 160p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science & Technology
<br/><br/><label>Dewey Class. No.: </label>600 CHO-F