2009 · Dénis Sonwa, Y. Bele, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 2
2009 · Dénis Sonwa, Johnson Nkem, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)
2009 · H. Carolyn Peach Brown, Johnson Nkem, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research)