Held, Wolfgang <br/><br/>
The quality of numbers 1 to 31 / 
Wolfgang Held 
 - Edinburgh:  Floris Books,  c2012. 
 - 141 pages :  illustrations ;  20 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>ISBN: </label>9780863158643 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching.
<br/><br/><label>Dewey Class. No.: </label>CIR 513 H474 2012