1. D. Joravsky, The Lysenko Affair (Harvard University Press, 1970).
2. Z. Medvedev, The Rise and Fall of T. D. Lysenko (New York: Columbia, 1969).
3. M. G. Kains, Plant Propagation— Greenhouse and Nursery Practice (New York: Orange Judd, 1916) p. 175.
4. I. I. Schmalhausen, Factors of Evolution (Philadelphia: Blakis-ton, 1949).
5. T. Dobzhansky, Genetics and the Origin of Species, 3rd edn (New York: Columbia, 1951).