Murphy, Frank  1952 <br/><br/>
Ben Franklin and the magic squares 
Frank Murphy 
 - ed. 
 - [S.l.]  Random House  2001 
 - 48 p. 
 - Step into reading. Step 4 .
 - Step into reading. Step 4 .
<br/><br/><label>ISBN: </label>9780439328937