Swan, Michael <br/><br/>
Spectrum : an anthology of english varieties for intermediate and more advanced students 

 - Cambridge  Cambridge University  1978 
 - 195 p. : ilus 
 - Cambridge english language learning   6 .
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>0-521-21622-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>/LINGUISTICA/INGLES-PROPOSITOS ESPECIFICOS/REVISADO/