Japan. Kōain. Kahoku Renrakubu

• Hokushi ni okeru kachiku shiryō shigen chōsa
• Kahoku ni okeru kanpō jūi ni kansuru chōsa
• Kahoku ni okeru kōjō dōryoku no jukyū genkyō chōsa hōkokusho
• Kahoku ni okeru shinbun zasshi tsūshinsha chōsa
• Kita Shina menʼyō chōsa hōkoku
• Minkoku nijūkunendo Sansei-shō menka jijō chōsa
• Sainan-shi kō ichi nōka no nōhō jittai chōsa
• 北支に於ける文教の現狀
• 山西省資源調查槪報