- 1997 - - 茨城大学,非常勤講師
- 1997 - - Ibaragi University, Part time Lecturer
- 1980 - 1987 Gunma University
- 1980 - 1987 Gunma University, Part time Lecturer
- 1961 - 1966 Hokkaido University
- 1961 - 1966 Hokkaido University, Assistant Professor
- 1961 - 1965 Hokkaido University of Education
- 1961 - 1965 Hokkaido Educationa University, Part time Lecturer
- 1957 - 1961 Hokkaido University
- 1957 - 1961 Hokkaido University, Assistant
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