Pennist L L <br/><br/>
Elements of variables complex 
Pennist L L; Gordon L I 
 -  1963 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>24756 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B38:92, K3