Cadwell, J.H. <br/><br/>
Topics in recreational mathematics   
by J. H. Cadewell. 
 - Cambridge  Cambridge University Press  1966 
 - xii, 179p. 
<br/><br/><label>ISBN: </label>052104409X 
<br/><br/><label>LCCN: </label>67-10013 
<br/><br/><label>Dewey Class. No.: </label>510  / N667