REFERENCES
- Rounce, N. V., King, J. G. M., and Thorton, D—“A Record of Investigations and Observations on the Agriculture of the Cultivation Steppe of Sukuma and Nyamwezi with suggestions as to the lines of progress”; Government Printer, Dar es Salaam, 1942.
- Wade, F. B., and Crawley, A.—“Two Levelling Instruments”, E.A.A.J., IV, 1939, p. 304.