1. Berg, C. van den, The influence of salt in the soil on the yield of agricultural crops. Trans. Fourth Intern. Congr. Soil Sci. Amsterdam (1950)1, 411–413.
2. Bower, C. A., and Pierre, W. H., Potassium response of various crops on a high lime soil in relation to their contents of potassium, calcium, magnesium and sodium. J. Am. Soc. Agron.36, 608–614 (1944).
3. Brioux, Ch., and Jouis, Edg., Expériences sur la fumure du lin a filasse action particulière des chlorures et des sulfates. Ann. Agron. N. S.9, 454–468 (1939).
4. Dupont, C., Action exercée par les chlorures alcalins sur les plantes et sur les sols. Ann. Sci. Agron.,41, 369–91 (1924).
5. Hayward, H. E., and Spurr, W. B., The tolerance of flax to saline conditions: effect of sodium chloride, calcium chloride, and sodium sulphate. J. Am. Soc. Agron.36, 287–300 (1944).