TY  - BOOK
AU  - KOSEISHO Ed.
TI  - Kosei Hakusho, 1991
U1  - X94.42.N91, N1 
PY  - 1992///
CY  - Tokyo
PB  - Zaidan Hojin Kosei Mondai Kenkyukai Japan 
KW  - JL
ER  -