Harrison, K. David <br/><br/>
When languages die :  the extinction of the world's languages and the erosion of human knowledge / 
K. David Harrison 
 - Oxford :  Oxford University Press,  2007 
 - x, 292 p. :  ill., maps ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 263-283) and index 
<br/><br/><label>ISBN: </label>9780195372069  RM63.26 978019518192 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language obsolescence