TY  - BOOK
AU  - OKUTSU Keiichiro  etc.
TI  - Iwayuru nihongo doshi no kenkyu
U1  - P42:2, M6 
PY  - 1986///
CY  - Tokyo
PB  - Bonjinsha (Nihongo no) Japan   
KW  -  NL
KW  - JL
ER  -