by SATOU, MOTOHIRO, OKADA, RYOJI, TSUKUBA HAUSU 9-401, YAMADA, TOSHIHIRO, SAITO, RYUSEI, NAKAJIMA, TADAKATSU, OKANO, CHIE, OGATA, HISANAO
Year of Publication 23.09.1992

by HIOKI, SUSUMU, ARAYA, TAKESHI, KANAMARU, MASATOSHI, IBARAKI, YOSHIRO, ENDO, YOSHISHIGE, OKADA, RYOJI, HANEDA, MITSUAKI
Year of Publication 21.11.1985

by SATO, MOTOHIRO, HIGASHIIBARAKI-GUN, IBARAKI 311-32, JP, OKADA, RYOJI, CHIYODA-MURA, NIIHARA-GUN, IBARAKI 315, JP, KUWABARA, HEIKICHI, HIGASHIIBARAIKI-GUN, IBARAKI 311-32, JP, YAMADA, TOSHIHIRO, NISHIIBARAKI-GUN, IBARAKI 309-17, JP
Year of Publication 22.07.1999

by SATOU, MOTOHIRO, OKADA, RYOJI, TSUKUBA HAUSU 9-401, YAMADA, TOSHIHIRO, SAITO, RYUSEI, NAKAJIMA, TADAKATSU, OKANO, CHIE, OGATA, HISANAO
Year of Publication 04.09.1991

by MATSUSHITA; TOSHIO, KONO; TAKASHI, YAMAURA; SATORU, GOTO; MARUTOMO, OKADA; RYOJI, AMANO; HIDEAKI, HIRAI; HIROMU, YAMAGUCHI; TAKASHI, YOSHIMURA; YASUHIRO, MAKINO; TOSHIAKI, TAKATSUKA; AKIO, KIMURA; HIDEYUKI, YAMADA; TOSHIHIRO, KOIZUMI; YUICHI
Year of Publication 05.04.1994

by TAKADA, KUNIO, NISHIIBARAKI-GUN, IBARAKI-KEN, JP, OKADA, RYOJI, CHIYODAMACHI, NIIHARI-GUN, IBARAKI-KEN, JP, AIZAWA, KOOJI, HITACHI-SHI, JP, OTANI, KENJI, TSUCHIURA-SHI, JP, HANEDA, MITSUAKI, NISHIIBARAKI-GUN, IBARAKI-KEN, JP, YAMADA, MASAYUKI, TSUCHIURA-SHI, JP, YAMADA, TOSHIHIRO, NISHIIBARAKI-GUN, IBARAKI-KEN, JP
Year of Publication 21.01.1999

by OKADA, RYOJI, CHIYODA-MURA NIIHARI-GUN IBARAKI-KEN, JP, HIOKI, SUSUMU, KASHIWA-SHI CHIBA-KEN, JP, HANEDA, MITSUAKI, NISHIIBARAKI-GUN IBARAKI-KEN, JP, ARAYA, TAKESHI, HIGASHIKURUME-SHI TOKYO, JP
Year of Publication 16.02.1995

by Okada, R, Imai, S, Ishii, T
Published in Japanese journal of veterinary science (01.01.1983)

by YAMADA, MASAYUKI, TSUCHIURA, JP, TAKADA, KUNIO, IBARAKI, JP, NII, KATSUTOSHI, HITACHI, JP, OKADA, RYOJI, IBARAKI, JP, AIZAWA, KOOJI, HITACHI, JP
Year of Publication 05.08.1993

by ARAYA, TAKESHI, HIGASHIKURUME-SHI, JP, OKADA, RYOJI TSUKUBA HAUSU 1-305, NIIHARI-GUN IBARAKI-KEN, JP, KATAYAMA, SEIJI, SUITA-SHI, JP, MATSUNAWA, AKIRA, NISHINOMIYA-SHI, JP, HIOKI, SUSUMU, KASHIWA-SHI, JP, HANEDA, MITSUAKI, NISHIIBARAKI-GUN IBARAKI-KEN, JP
Year of Publication 22.07.1993

by GOTO, MARUTOMO, IBARAKI, JP, KOUZIMI, YUICHI, HIRATSUKA, JP, YAMADA, TOSHIHIRO, MATSUSHITA, TOSHIO, HIRAI, HIROMU, TSUKUBA, JP, KONO, TAKASHI, TAKATSUKA, AKIO, HIRATSUKA, JP, OKADA, RYOJI, YAMAGUCHI, TAKASHI, TSUCHIURA, JP, MAKINO, TOSHIAKI, AMANO, HIDEAKI, ODAWARA, JP, YOSHIMURA, YASUHIRO, IBARAKI, JP, KIMURA, HIDEYUKI, YAMAURA, SATORU, ODAWARA, JP
Year of Publication 09.04.1992

by GOTO, MARUTOMO, IBARAKI, JP, KOUZIMI, YUICHI, HIRATSUKA, JP, HIRAI, HIROMU, TSUKUBA, JP, MAKINO, TOSHIAKI, IBARAKI, JP, OKADA, RYOJI, IBARAKI, JP, TAKATSUKA, AKIO, HIRATSUKA, JP, YAMAGUCHI, TAKASHI, TSUCHIURA, JP, MATSUSHITA, TOSHIO, ODAWARA, JP, AMANO, HIDEAKI, ODAWARA, JP, YOSHIMURA, YASUHIRO, IBARAKI, JP, KIMURA, HIDEYUKI, TSUCHIURA, JP, KONO, TAKASHI, IBARAKI, JP, YAMADA, TOSHIHIRO, IBARAKI, JP, YAMAURA, SATORU, ODAWARA, JP
Year of Publication 21.10.1993

by YAMADA, MASAYUKI, TSUCHIURA, JP, TAKADA, KUNIO, IBARAKI, JP, NII, KATSUTOSHI, HITACHI, JP, OKADA, RYOJI, IBARAKI, JP, AIZAWA, KOOJI, HITACHI, JP
Year of Publication 24.07.1997

by ISHIDA RYOJI,FUKU KIISSEI,OKADA TOMOSEN
Year of Publication 09.08.2006

by MORI RYOJI,KIZU KOUICHI,OKADA KEIJI
Year of Publication 14.12.2005

by MORI RYOJI,KIZU KOUICHI,OKADA KEIJI,TAKIMOTO KAZUYUKI
Year of Publication 18.07.2007

by MORI RYOJI,KIZU KOUICHI,OKADA KEIJI,TAKIMOTO KAZUYUKI
Year of Publication 26.04.2006