Goldberg, Seymour <br/><br/>
Unbounded linear operators:  theory and applications 
/ by Seymour Goldberg 
 - America:  Dover Publications,  1966. 
 - viii,199p. 
<br/><br/><label>ISBN: </label>0486453316 
<br/><br/><label>Dewey Class. No.: </label>517.7  / GOL/U