Sommerfeld, Arnold <br/><br/>
Partial differential equation in physics. 
by Arnold Sommerfeld ; translated by Ernest.G.Straus 
 - New York  Academic Press   c1949 
 - x,335p.;  21cm.- 
 - Lectures on theoretical physics;no.6 .
<br/><br/><label>Dewey Class. No.: </label>530.155  / SOM