Nihon Keieisha Dantai Renmei. Jimukyoku

• Jinji rōmu yōgo jiten =
• Chingin kōshō no kiso shiryō
• Danjo koyō kikai kintōhō hayawakari
• Henkakuki ni tatsu Nihon keizai to chingin mondai
• Keiki-chōseika no Nihon keizai to chingin mondai
• Tōmen no chingin mondai to kadai