Neuschwander, Cindy.

Sir Cumference and the sword in the cone : a math adventure / by Cindy Neuschwander ; illustrated by Wayne Geehan. - Watertown, Mass. : Charlesbridge, c2003. - 32 p. : col. ill. ; 24 cm.

ISBN: 9781570916014 (pbk.) 1570916012 (pbk.)

Subjects--Topical Terms:
Mathematics.
Geometry.
Mathematical recreations.
Children's literature--2007.