Kiyoshi Oka was born in 1901.
Hiroe Oka was born in 1971.
Oka Gorodovikov was born in 1879.
Hideko Oka was born in 1953.
Kazuo Hirotomo was born in 1944.
Kazuo Oga was born in 1952.
Kazuo Kitai was born in 1944.
Kazuo Yamada was born in 1912.
Kazuo Yoshimura was born in 1951.
Kazuo Nakanishi was born in 1922.
Kazuo Noda was born in 1908.
Kazuo Mori was born in 1911.