Alling Norman L <br/><br/>
Foundations of the theory of klein surfaces. 
Alling Norman L; Greenleaf Newcomb 
 -  1971 
<br/><br/><label>Standard No.: </label>126094 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B6:7, L1