- 1975 - 1984 Nihon University College of Humanities and Sciences
- 1975 - 1984 Nihon University, Assistant Professor
- 1984 - - 日本大学文理学部 教授
- 1984 - - 〃 〃 , Professor
- 1970 - 1974 Nihon University College of Humanities and Sciences
- 1970 - 1974 Nihon University, Instructor
- 1963 - 1969 Nihon University College of Humanities and Sciences
- 1963 - 1969 Nihon University, Research Assistant
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