Dos mundos /  Communicacion y comunidad 
Tracy Terrell ... [et al.]. 
 - 7th ed. 
 - New York :  McGraw-Hill Higher Education,  2009. 
 - 1 v. (various pagings) :  col. ill., col. maps ; 
<br/><br/><label>ISBN: </label>9780070171817 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spanish language
<br/><br/><label>LC Class. No.: </label>PC4129.E5  / D67 2009b