Crystal,David, <br/><br/>
Language death 
By David Crystal 
 - Cambridge  Cambridge University Press  2009 
 - x;198p. 
<br/><br/><label>ISBN: </label>978-0-521-12175-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language obsolescence
<br/><br/><label>Dewey Class. No.: </label>P  / P9