- 1978 - 1980 Shiraumegakuen College
- 1978 - 1980 Shiraume Gakuen College, Professor
- 1971 - 1978 Shiraumegakuen College
- 1971 - 1978 Shiraume Gakuen College, Associate Professor
- 1977 - - 群馬大学 非常勤講師
- 1977 - - Gunma University, Lecturer
- 1970 - 1971 Shiraumegakuen College
- 1970 - 1971 Shiraume Gakuen College, Lecturer
- 1967 - 1969 日本学術振興会 奨励研究員
- 1967 - 1969 Japan Soc, Promo. Sci., Incentive Researcher
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