References
- Machakos District Gazetteer (1958). Unpublished.
- Machakos District Agricultural Office Files. Unpublished.
- Martin, J. H. (1930). The Comparative Drought Resistance of Sorghums and Corn. J. Amer. Soc. Agron., 22, No. 12.
- Dowker, B. D. (1958). Sorghum Growing in the Drier Parts of Machakos District. Unpublished Report.
- Doggett, H. (1957). Review Article: Bird Resistance in Sorghum and the Quelea Problem. Field Crop Abstr., 10, No. 3.
- Clarke, R. T. (1962). Personal communication.
- Doggett, H. (1957). The Breeding of Sorghum in East Africa. I—Weevil Resistance in Sorghum Grains. Empire J. exp. Agric., 25, No. 97.
- Doggett, H. (1958). The Breeding of Sorghum in East Africa. II—The Breeding of Weevil-resistant Varieties. Empire J. exp. Agric., 26, No. 101.
- Harrison, M. N. (1958). Personal communication.
- Dowker, B. D. (1962). Rainfall Reliability and Maize Yields in Machakos District. E. Afr. agric, for J. (In press.)
- Doggett, H. (1961). Personal communication.