- 2000 - 2002 Teikyo University Faculty of Economics
- 2000 - 2002 Full Prof.Faculty of Economics,Teikyo Univ
- 1967 - 2000 Yokohama National University College of Business Administration
- 1967 - 2000 Assisitant Prof-Feull Prof.Faculty of
- 1957 - 1967 Yokohama National University College of Economics
- 1957 - 1967 Assistant-Assistantprof Faculty of Economics
- Business Administration,Y.N.U
- Yokohama National aniv,
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