TY  - SER
AU  - Tsumagari, Toshiro.
TI  - Linguistic Diversity and National Borders of Tungusic
T2  - Senri Ethnological Studies ; 
PY  - 1997///
CY  - Osaka-JA : 
PB  - National Museum of Ethnology, 
N1  - Northern Minority Languages. Problems of Survival
ER  -