- 1978 - 1996 Hokkaido University of Education
- 1978 - 1996 Hokkaido University of Education Sapporo Campus, Professor
- 1964 - 1978 北海道学芸大学札幌分校助教授
- 1964 - 1978 Hokkaido University of Liberal Arts Sapporo Campus, Assistant Professor
- 1960 - 1964 Hokkaido University
- 1960 - 1964 Hokkaido University, Research Assistant
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