by OKUMOTO YASUHARU, IKEDA SEIJI
Year of Publication 16.02.1989

by MORITA TOSHIYUKI, OKUMOTO YASUHARU, ISHIZAKI MITSUHARU
Year of Publication 08.03.1991

by OKUMOTO YASUHARU, TANAKA MITSUO, MACHIDA TAICHI
Year of Publication 15.05.1990

by OKUMOTO YASUHARU, AKASAKA KEIICHI, MACHIDA TAICHI
Year of Publication 07.12.1989

by WATANABE TAKESHI, OKUMOTO YASUHARU, MATSUMOTO AKIRA, MACHIDA TAICHI
Year of Publication 10.09.1993

by KASAI HIRONAO, OKUMOTO YASUHARU, WATABE KEIJI, AMIKURA SADAO
Year of Publication 28.10.1992

by OKUMOTO YASUHARU, TSUNODA TOSHIYUKI, OSANO ICHIO, OKAZAKI MASAO
Year of Publication 29.11.1991

by NOGUCHI TSUTOMU, OKUMOTO YASUHARU, ISHIZAKI MITSUHARU, WATABE KEIJI
Year of Publication 02.04.1991

by FUNAYAMA TSUNEZOU, OKUMOTO YASUHARU, MATSUMOTO AKIRA, IKEDA SEIJI
Year of Publication 18.04.1990

by OKUMOTO YASUHARU, KANEDA FUMIHIKO, KUWABARA HIDEAKI, OSANO ICHIO
Year of Publication 13.04.1990

by WATANABE TAKESHI, YAMAZAKI SATOSHI, OKUMOTO YASUHARU, KOZU HIROFUMI, SUEHIRO MASANAO, YAJIMA KOICHI, ONODA MAMORU, CHOKAI HIROSHI
Year of Publication 11.06.1993