Fourier series and boundary value problems / 
Churchill, Ruel V. 
 - New York :  McGraw-Hill,  c1941 
 - ix,206p.:  ill.;  22cm. 
<br/><br/><label>Subjects--Topical Terms: </label>--mathematics
<br/><br/><label>Dewey Class. No.: </label>517.2 CHU