Matthews, Peter J. <br/><br/>
Bulletin of the National Museum of Ethnology ;   Vol. 29, no. 4 

 - Osaka-JA  :   National Museum of Ethnology,   2005. 
 - p. 587-615 :   il. 
 - Irregular 
 - Vol. 29, no. 4(2005).  
 - Bulletin of the National Museum of Ethnology ;   Vol. 29, no. 4 .
 - Japón.   National Museum of Ethnology. .
<br/><br/> Northern Minority Languages. Problems of Survival.