Goldberg, Seymour., <br/><br/>
Unbounded linear operators : theory and applications 

 - New York:  Dover Publication,  1994. 
 - viii, 199 p.:   ill. ;  22 cm. . 
 - Dover books on mathematics. .
<br/><br/> Dover ed.  
<br/><br/><label>ISBN: </label>9780486453316 
<br/><br/><label>Dewey Class. No.: </label>515.7246 GOL