- 1974 - 1995 Kochi University
- 1974 - 1995 Kochi University, Professor
- 1995 - - 関西外国語大学 教授
- 1995 - - Kansai Gaidai University, Professor
- 1967 - 1974 Kochi University
- 1967 - 1974 Kochi University, Associate Professor
- 1966 - 1967 Kochi University
- 1966 - 1967 Kochi University, Assistant Professor
- 1965 - 1966 Kochi University
- 1965 - 1966 Kochi University, Research Assistant
- Kansai Gaidai University College of Foreign Studies Professor of English
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