Yoichi Kumagai
发表
Norimasa Takayama,
Ryohei Ono,
Akio Shimomura,
2000
.
Yoichi Kumagai,
1983
.
Kaoru Saito,
Yoichi Kumagai,
Akio Hujiwara,
1997
.
Kaoru Saito,
Yoichi Kumagai,
Tsuyoshi Honjo,
1994
.
Kaoru Saito,
Yoichi Kumagai,
Taro Yoshioka,
1994
.
Kaoru Saito,
Yoichi Kumagai,
Tsuyoshi Honjo,
1991
.
Akio Fujiwara,
Kaoru Saito,
Keisuke Tsukaguchi,
2004
.
Yoichi Kumagai,
Naoko Fujita,
2004
.
Yoichi Kumagai,
Tetsuo Yanase,
1984
.