Neuschwander, Cindy, <br/><br/>
Sir Cumference and the Isle of Immeter :  a math adventure / 
Cindy Neuschwander ; illustrated by Wayne Geehan. 
 - Watertown, Massachusetts :  Charlesbridge,  (c)2006. 
 - 32 pages :  color illustrations ;  25 cm. 
<br/><br/> Discusses young Per taking a mathmatical adventure. 
<br/><br/>
<br/><br/><label>ISBN: </label>9781570916809 9781570916816 
<br/><br/><label>LCCN: </label>2005020747 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>QA445  / .S573 2006 QA445