Nichi-Man Nōsei Kenkyūkai. Sōkai

• Nichi-Man Nōsei Kenkyūkai daiikkai sōkai hōkokusho
• Nichi-Man Nōsei Kenkyūkai dainikai sōkai sokkiroku
• Nichi-Man Nōsei Kenkyūkai daiyonkai sōkai sokkiroku