REFERENCES
- Wright, C. H.—Soil Analysis, London, 1939, p. 33 et seq.
- Bennett, H. H.—Soil Sci., 1926, 21, pp. 349–374.
- Prescott, J. A.—Report Aus. New Zeal. Adv. Sci., 1937, XXIII, pp. 258–271.
- Hogentogler.—The Engineering Properties of Soils, New York, 1937.
- South African National Road Board, Pretoria.—Unpublished reports.
- Milne, G.—E. Afr. Agric. Journal, 1938, III, pp. 350–361.
- Emerson, P.—Principles of Soil Technology, New York, 1930, p. 91.
- Harrison, J. B.—“Katamorphism of Igneous Rocks under humid tropical conditions”, published by Imp. Bur. Soil Sci., Harpenden, 1934.
- Pendleton, R. L.—“Laterite and its structural uses in Thailand and Cambodia”, Geog. Review, 1941, XXXI, pp. 177–202.