Harrison, K. David 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 Includes bibliographical references (p. 263-283) and index ISBN: 9780195372069 ISSN: 2006045308 Subjects--Topical Terms: Language obsolescence Dewey Class. No.: 417.7 HR