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1by Okech, G., Dolan, R.B., Stevenson, P., Alushula, H., Watson, E.D., Luckins, A.G., Omuse, J.K.
Published 1996-08Journal Article bibliotecaCGIAR -
2by Dolan, R.B., Alushula, H., Munga, L., Mutugi, M., Mwendia, C., Okech, G., Sayer, P.D., Stevenson, P.G.W., Baker, R.L., Magadi, M.
Published 1994Conference Paper bibliotecaCGIAR