1. SALTER, P. J. (1956). Experiments on the irrigation of cauliflowers.Rep. natn. Veg. Res. Stn for 1955, 37.
2. STANHILL, G. (1957). Irrigation of carrots.Rep. natn. Veg. Res. Stn for 1956, 47.
3. WINTER, E. J., and BLACKWALL, F. L. C. (1958). Irrigation of a rotation of crops.Rep. natn. Veg. Res. Stn for 1957, 36–7.