Webber, G. Cuthbert &  Brown, John A. <br/><br/>
Number Concepts and Geometry 
By G. Cuthbert Webber & John A. Brown 
 - Massachusetts   Addison-Wesley Publishing Company  1969 
 - xi, 416 pages, 24 cm. 
<br/><br/> include index 
<br/><br/><label>Dewey Class. No.: </label>510 W38 C2