Lorch, Edgar R. (Edgar Raymond), 1907-  Lorch, Edgar R. (Edgar Raymond), 1907- <br/><br/>
Spectral theory. 

 - New York,  Oxford University Press,  1962. 
 - University texts in the mathematical sciences .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>62009824 /L/r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spectral theory (Mathematics)
<br/><br/><label>LC Class. No.: </label>QA320  / .L6 
<br/><br/><label>Dewey Class. No.: </label>517.5