Halmos, Paul R. <br/><br/>
Introduction to Hilbert space:  and the theory of spectral multiplicity 
Paul R.Halmos 
 - 2nd ed.  
 - New York  Chelsea pub.  1957 
 - 114 p.  
<br/><br/> Includes bibliography and references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hilbert spaces
<br/><br/><label>Dewey Class. No.: </label>515.73   / HAL