- 1982 - 1986 Kagawa University Faculty of Agriculture
- 1982 - 1986 Kagawa University, Associate Professor
- 1986 - - 愛媛大学大学院連合農学研究科教授
- 1986 - - 香川大学農学部 教授
- 1986 - - Ehime Univ. United Graduate School, Professor
- 1986 - - Kagawa University, Professor
- 1971 - 1982 Kagawa University Faculty of Agriculture
- 1971 - 1982 Kagawa University, Assistant Professor
- 1978 - 1980 ミネソタ大学客員研究員
- 1978 - 1980 University of Minnesota, Visiting Scientist
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