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2012 · Arega D. Alene, Robertson Khataza, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)
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2010 · Kambewa, E., Mudimu, G.D., et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)
2010 · N.M. Mahungu, S. Jumbo, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)
2007 · Phiri, M., Mhone, A., et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)
2005 · D. Siyeni, N.M. Mahungu, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)