Jaetzold, R., Schmidt, H., Hornetz, B. and Shisanya, C. (2010) Farm Management Handbook of Kenya, Vol. II, Natural Conditions and Farm Management Information. 2nd Edition, PART II/B Central Kenya, Subparts B1 and B2 Central and Rift Valley Province Middle and Ministry of Agriculture, Kenya, in Cooperation with the German Agency for Technical Cooperation (GTZ), Nairobi.

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