Adewale F. Mabawonku / C. Branner Jespersen / Central Bank of Kenya / D. N. Ndegwa / David W. Norman / H. Brammer / J. Eygelaar / Jean Rivero / K. A. Hirst / K. A. Ulvund / Kenya. Income Tax Department / Louise Fortmann / Mohammed E. Awad / National Irrigation Research Station (Zambia) / Surendra Kumar / W. M. Chibasa / David H. Pryor / G. I. Mkindi / Christopher J. N. Gibbs | 