Sally, Judith D. <br/><br/>
Roots to research :  a vertical development of mathematical problems / 
Judith D. Sally, Paul J. Sally, Jr. 
 - Providence, R.I. :  American Mathematical Society,  c2007.[2012]. 
 - xiii, 338 p. : 
<br/><br/><label>ISBN: </label>9780821844038 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510.72  / Ro