Koichi Okamoto
发表
Koichi Okamoto,
1985
.
T. Oka,
S. Yamaguchi,
Koichi Okamoto,
1985
.
Koichi Okamoto,
Hidetaka Okuda,
Yoshiaki Imai,
1986
.
Koichi Okamoto,
Eisaku Takaki,
1992
.
T. Oka,
S. Yamaguchi,
Koichi Okamoto,
1985
.