Beals,Richard. <br/><br/>
Topics in operator theory 

 - Chicago  The University of Chicago Press  1971 
 - x, 130 p. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operational calculus<br/>Operator theory
<br/><br/><label>Dewey Class. No.: </label>515.72  / BEA