Angel, Allen R. <br/><br/>
Algebra elemental 
/ Allen R. Angel / Richard Semmler / Donna R. Petrie 
 - 6a Ed 
 - Mexico  : Pearson Educacion  , 2007 
 - 667 p  : il, graf. 
<br/><br/><label>ISBN: </label>978-970-26-0775-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra
<br/><br/><label>Dewey Class. No.: </label>512 ANG