Mettsu Kenkyūjo

• Heisei 11-nendo sugureta shizen chiiki riyō tekiseika hōsaku kentō chōsa itaku gyōmu hōkokusho
• Kankyō kyōiku sokushinhō no kihon hōshin kaitei ni kansuru jichitai muke ankēto kōchiku, bunseki gyōmu hōkokusho