Doff, Adrian <br/><br/>
Language in Use :  Pre-intermediate : Self-study Workbook 

 - Cambridge :  Cambridge University Press,  1991. 
 - 120 p. :  il. 
<br/><br/> Irregular verbs / Phonetic symbols. 
<br/><br/><label>ISBN: </label>0-521-37852-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ACTIVIDADES DE APRENDIZAJE<br/>INGLÉS
<br/><br/><label>Index Terms--Genre/Form: </label><br/>LIBRO DE TEXTO