Akhiezer, N. I. and Glazman, I. M. <br/><br/>
Theory of linear operators in Hilbert spaces   

 - New York  Frederick Ungar Publishing  1961 
 - xi, 147p. Index, Bibl. 
<br/><br/> "v. 1, translated from the Russian Chapters 1-5 by Merlynd Nestell". (3d. Print 1978)   
<br/><br/><label>Dewey Class. No.: </label>515.72  / Ak315.TL