The Encyclopedia of language and linguistics /R.E. Asher, editor-in-chief ; J.M.Y. Simpson, coordinating editor. 

 - Oxford ;  New York :  Pergamon Press,  (c)1994. 
 - 10 volume :  illustrations, maps ;  31 cm. 
<br/><br/>Includes bibliographies and index. 
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<br/><br/><label>LC Class. No.: </label>P29  / .E539 1994 P29