Oxenden, Clive <br/><br/>
American english file 1 :  [online practice] / 
Christina Latham-Koenig, Clive Oxeden and Paul Seligson. 
 - 2nd ed. 
 - New York :  Oxford,  2013. 
 - 167 p. 
<br/><br/><label>ISBN: </label>9780194776158 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIBROS DE TEXTO--INGLES BASICO<br/>INGLES--ENSEÑANZA
<br/><br/><label>Dewey Class. No.: </label>421  / O98ao