Crystal, David, <br/><br/>
The Cambridge encyclopedia of language / 
David Crystal. 
 - Cambridge ;  Cambridge University Press,  1987. 
 - 480 p. : 
<br/><br/><label>ISBN: </label>0521264383 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages
<br/><br/><label>Dewey Class. No.: </label>403  / Ca