Nomura Gōmei Kaisha. Kaigai Jigyōbu

• Chiikibetsu ni mita Ranʼin no jūyō yushutsuhin
• Firipin keizai chōsa
• Paremuban-kō yushutsu sūji no kentō
• Ranʼin kōgyō no genjō
• Ranʼin no dojin gomu
• Saikin narabini shōrai ni okeru Indoshina keizai suishin hōi no hendō
• Senjika ni okeru Ranʼin furuden-ka no kichō
• Tō-Indo keizai no kenkyū