Douglas, Ronald G. <br/><br/>
Banach algebra techniques in operator theory 

 - New York  Academic press  1972 
 - xvi, 212p.  22 cm.  HB. 
 - Pure and applied mathematics .
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Operator theory<br/>Algebra techniques
<br/><br/><label>Dewey Class. No.: </label>512.55  / DOU