Sally, Judith D. , <br/><br/>
Roots to research :  a vertical development of mathematical problems / 
Judith D. Sally, Paul Sally. 
 - xiii, 338 pages :  illustrations ;  27 cm. 
<br/><br/><label>ISBN: </label>9780821844038 0821844032 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics --Research.
<br/><br/><label>LC Class. No.: </label>QA11.2   / .S24 2007