Baldor, Aurelio <br/><br/>
Aritmética  Aurelio Baldor. 

 - 2a ed. 
 - México  Grupo Editorial Patria  2007. 
 - 639 p.  23.5 cm. 
<br/><br/>Includes CD-ROM and index. 
<br/><br/><label>ISBN: </label>9789708170017 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic