Shiga-chō Kyōiku Iinkai

• Hira Gorufu Kurabu zōsei kōji ni tomonau maizō bunkazai hakkutsu chōsa hōkokusho
• Hojō seibi kankei iseki hakkutsu chōsa hōkokusho
• Nakahataden iseki hakkutsu chōsa gaiyō hōkokusho