1. Anon., 1959. International Rules for Seed Testing. Proc. int. Seed Test. Ass., 24, 475–584.
2. Austin, R. B., 1963. Yield of onions as affected by place and method of seed production. J. hort. Sci., 38, 277–85.
3. Austin, R. B., I966a. The growth of watercress (Rorippa nasturtium-aquaticum L. (Hayek)) from seed as affected by the phosphorus nutrition of the parent plant. Pl. Soil, 24, 113–20.
4. Austin, R. B., 1966b. The influence of the phosphorus and nitrogen nutrition of pea plants on the growth of their progeny. Pl. Soil, 24, 359–68.
5. Austin, R. B., and Longden, P. C., 1966a. Seed production. Rep. natn. Veg. Res. Stn, Wellesbourne, 1965, 44.