1. Akemine , H. Kikutchi , F. 1958 Genetic variability among hybrid populations of rice plants grown under various environments Studies in the bulk method of plant breeding 89 105 K. Sakai R. Takahashi H. Akemine
2. Potato blight epidemics;Cox;V.S.D.A. agric. Handb.,1960
3. Apparent virus infection in healthy potatoes;Dziewonska;Europ. Potato J.,1965
4. Gallegly , M. E. Niederhauser , J. S. 1959 Genetic control of host parasite interactions in the Phytophthora late blight disease Holton , C. S. et al., Plant Pathology 168 82
5. Distribution and utilization of natural variability in cultivated plants;Harlan;Brook-haven Symp. Biol.,1956