Voegelin, C. F. <br/><br/>
Classification and Index of the world's Languages / 
by C. F. Voegelin and F. M. Voegelin 
 - New York :  Else Vier,  1977. 
<br/><br/><label>ISBN: </label>0444001557 
<br/><br/><label>Subjects--Index Terms: </label>Linguistices Other Economic Languages Bibliography