Aigner M Ed. <br/><br/>
Geometries and groups. 
Aigner M Ed.; Jungnickel D Ed. 
 -  1981 
<br/><br/><label>Standard No.: </label>121931 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B6, M1