Nihon Yuryō Tōsei Kabushiki Kaisha. Nanpō Yushi Shigen Chōsashitsu

• Eiryō Boruneo no yushi shigen ni tsuite
• Eiryō Indo oyobi Seiron no yushi shigen
• Marē no yushi shigen
• Minami Taiheiyō shotō ni okeru yushi shigen