Schwinger, Julian <br/><br/>
Particles, Sources and Fields   
/ by  Julian Schwinger 
 - London:   Addison Wesley Pub Co;   1973.  
 - 459p.  
<br/><br/><label>ISBN: </label>0-201-06783-8 
<br/><br/><label>Dewey Class. No.: </label>539.721  / SCH/P