1. Abichandani, C. T. and Patnaik, S.Rice News Teller, 1958a,6 (2), 8.
2. ----- ..J. Indian Soc. Soil Sci., 1958b,6.
3. Bartholomew, R. P...Soil Sci., 1929,28, 85.
4. Bhuiyan, S... Ibid., 1949,67, 231.
5. Dastur, R. H. and Malkani, T. J.Indian J. Agric. Sci., 1933,3, 157.