"Elspeth Graham","Rosalind Kerven and Jenny Roberts" <br/><br/>
Puzzling shapes 

 -  Oxford : Oxford University Press, 2002.  2002 
 - 32 
<br/><br/><label>ISBN: </label>9780199195176 
<br/><br/><label>Dewey Class. No.: </label>F823  / 140