FRIEDRICHS, K.O. <br/><br/>
Spectral theory of operators in hilbert space 
/[by] K.O.Friedrichs 
 - New York  Springer-Verlag  1973 
 - 9 v (v.9-viii, 244 p.) 
<br/><br/> Includes references & index.<br/>Partial contens: Applied mathematical sciences 
<br/><br/><label>ISBN: </label>3540900764 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hilbert spaces<br/> Linear topological spaces
<br/><br/><label>Dewey Class. No.: </label>515.733  / FRI