1. Varieties and breeding in Japanese radish;Aoba;The iden,1979
2. Root crops: ‘Radish’;Aoba,1983
3. Studies on the breeding Fusarium resistance in radish. I. Screening of radish varieties for Fusarium resistance;Ashizawa;Bull Veg. & Ornam. Crops Res. Sta.,1979
4. The continuous cultivational injury and disease resistance in cole crops;Ashizawa;Agr. & Hortic.,1980
5. Studies on the breeding of clubroot-resistance in cole crops. II. Screening of cole crops of clubroot-resistance (2);Ashizawa;Bull Veg. & Ornam. Crops Res. Sta.,1980