Zenkoku Sanrinkai Rengōkai (Japan)

• Dainikai sanson jittai chōsa hōkokusho
• Karafuto ringyō seisaku kakushinron
• Ringyō keizai seisaku shiryō
• Sanson keizai jittai chōsa hōkokusho
• Waga kuni ni okeru mokuzai kanzei oyobi sono enkaku