- 1995 - 1998 Kagawa University
- 1995 - 1998 Kagawa University, professor
- 1998 - - 高松大学,教授
- 1998 - - Takamatsu University, professor
- 1991 - 1995 Kagawa University
- 1991 - 1995 Commercial Junior College, professor
- 1969 - 1991 Kagawa University
- 1969 - 1991 Commercial Junior College, assistant professor
- 1964 - 1969 Kagawa University
- 1964 - 1969 Commercial Junior College, assistant・lecturer
- 1961 - 1964 香川県立高松商業高等学校,教論,teacher
- 1961 - 1964 Kagawa Pref. Takamatsu Commercial HS, teacher
- 1957 - 1961 香川県立志度商業高等学校,講師・教諭
- 1957 - 1961 Kagawa Pref. Shido Commarcial HS, teacher
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