Sally, Judith D. <br/><br/>
Roots to research  : A vertical development of mathematical problems 
/ by Judith D. Sally and Paul J. Sally 
 - 1st ed. 
 - New York:   American Mathematical Society,   2012. 
 - xiii, 338p. 
<br/><br/><label>ISBN: </label>9780821887257 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra<br/>Math<br/>Probability<br/>Right triangles
<br/><br/><label>Dewey Class. No.: </label>510.72  / SAL/R