- 1994 - 2002 東京農工大学大学院連合農学研究科助教授併任
- 1994 - 2002 Assistant professor,United Graduate School of
- 1988 - 2002 宇都宮大学農学部助教授
- 1988 - 2002 Assistant professor,Faculty of Agriculture,
- 2002 - - 東京農工大学大学院連合農学研究科教授併任
- 2002 - - 宇都宮大学農学部教授
- 2002 - - Professor,United Graduate School of United Graduate
- 2002 - - Professor,Faculty of Agriculture,Utsunomiya University
- 1982 - 1988 宇都宮大学農学部助手
- 1982 - 1988 Research Associate,Faculty of Agriculture,
- Agriculture and Technology
- School of Agricultural Science Tokyo University of
- and Technology
- Agricultural Science Tokyo University of Agriculture
- 宇都宮大学
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