Ōsaka-fu Chihō Jichi Kenkyūkai

• Chihō bunken jidai ni okeru jūmin jichi no arikata
• Chihō jichi no kaiko to tenbō
• Chihō kōkyō dantai to gyōsei kaikaku
• Rinji Gyōsei Chōsakai to chihō kōkyō dantai