Friedrichs, Kurt Otto,  1901- <br/><br/>
Spectral representations of linear operators/ 
Kurt Otto Friedrichs. 
 - New York:  New York University,  1948. 
 - 191 l.:  29 cm. 
<br/><br/> Lectures at Institute for Mathematics and Mechanics, New York University, 1948. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Linear operators.
<br/><br/><label>Dewey Class. No.: </label>515.724  / F911s