De Castells <br/><br/>
Mosaicos :   spanish as a world language / 
Matilde Olivella de Castells. 
 - 5th 
 - Upper Saddle River :  Prentice Hall,  2010. 
 - xxiii, 525 p. col. ill.: 25.3 cm. 
<br/><br/> Includes appendices and glossary 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>13:978-0-205-66392-7 
<br/><br/><label>LC Class. No.: </label>468.4241 M