Wilder, Raymonds L <br/><br/>
Evolution of mathematical concepts: An elementary study 

 - Miltan Keynes  Open University Press  1978 
 - 216p. 
<br/><br/><label>ISBN: </label> UKP 2.95 
<br/><br/><label>Source: </label> UKP 2.95 
<br/><br/><label>Dewey Class. No.: </label>510 WIL