Razzell, Arthur G. <br/><br/>
4 and the shape of 4 / 
 Four and the shape of four 
Arthur G.Razzell and K. G. O. Watts ; illustrated by Leonard Horton 
 - London :  Rupert Hart-Davis,  1967 
 - 32 p. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry<br/>Numbers