Helson Henry <br/><br/>
Harmonic analysis. 
Helson Henry 
 - 2 
 -  1995 
<br/><br/><label>Standard No.: </label>19664 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B43, N5