1. M. M. Afanasiev(1948 ). Effect of seed treatments on seedling disease of beets planted in the greenhouse in highly infected soil .Proc. Amer. Soc. Sug. Beet Tech. pp.520 -2 .
2. M. M. Afanasiev(1948 ). Effect of fertilisers on diseases and yield of sugar beets planted in depleted soil .Proc. Amer. Soc. Sug. Beet Tech. pp.294 -9 .
3. G. H. Coons, J. E. Kotila, and H. W. Bochstahler(1946 ). Black root of sugar beets and possibilities for its control .Proc. Amer. Soc. Sug. Beet Tech. pp.364 -80 .