Indian journal of pure and applied physics (2019) / 
edited by S Choudhary . 
 - New Delhi :  NISCAIR ,  2019 . 
 - 1V:  ills;  28 cm. 
 - M 
<br/><br/>  BJ5199-vol.57n.o.1-5 
<br/><br/><label>ISSN: </label>00195596 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHYSICS-PERIODICALS
<br/><br/><label>Dewey Class. No.: </label>530.05  / CHO/I