Hua bei zong he diao cha yan jiu suo

• Beijing xi jiao Guajia tun jia ji diao cha
• Denpu jitchō ni kansuru chōsa
• Kahoku nōgyō tōkei chōsa ken chōsahan chōsa yōkō
• Kichū-ku Gojinkyōchin fukin o chūshin to suru Chūkyō dōkō jittai chōsa gaikyō hōkoku
• Kinkyū hijō jitai ni okeru Tanshin-shi shokuryō jikyū taisaku
• Kinkyū shokuryō taisaku chōsa hōkokusho
• So-Wai chiku shokuryō gyōsei shūbai ni okeru shomondai no kentō