Willoughby, Stephen S. <br/><br/>
Math explorations and applications / 
By S.S. Willoughby, C. Bereiter et al. 
 - Columbia, OH :  SRA  McGraw-Hill,  1999. 
 - 584 p. :  ill. ;  28 cm. 
<br/><br/>Index p. 580-583 
<br/><br/><label>ISBN: </label>0-02-687855-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics