Proga, Rosanne. <br/><br/>
Arithmetic and algebra / Rosanne Proga.- 3rd ed. 

 - 3rd ed. 
 - Boston : PWS Pub. Co., c1997 
<br/><br/><label>ISBN: </label>0534929974 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic
<br/><br/><label>Dewey Class. No.: </label>513.12 PRO