Hallamaa, Panu. <br/><br/>
Senri Ethnological Studies ;   no. 44 

 - Osaka-JA :   National Museum of Ethnology,   1997. 
 - p. 187-223 :   il. 
 - Irregular 
 - No. 44, (1997) 
 - Senri Ethnological Studies ;   no. 44 .
 - Japón.   National Museum of Ethnology. .
<br/><br/> Northern Minority Languages. Problems of Survival.