Helgesen, Marc <br/><br/>
Practical english language teaching :  listening / 
M. Helgesen; S. Brown;. 
 - New York, N.Y. :  McGraw-Hill,  2007. 
 - 184 p.+1 CD :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>978-0-07-319891-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Languages ​​of the World