Singh, R.B <br/><br/>
Introduction to modern physics 
/by R.B Singh 
 - 2nd ed. 
 - New Delhi:  New Age International,  2010. 
 - 319p. 
<br/><br/><label>ISBN: </label>9788122425987 
<br/><br/><label>Dewey Class. No.: </label>530  / SIN/I