1990 · J. Cobbina, A. N. Atta-Krah, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 18
1987 · Sumberg, J.E., McIntire, John M., et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 14
1995 · Kang, B., Hauser, S., et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 7
1986 · Atta-Krah, A.N., Sumberg, J.E., et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 7
1991 · Reynolds, L., Domenico, C.M. di, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 6
1988 · L. Reynolds, A. N. Atta-Krah, et al. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 6
1992 · Cobbina, J., Atta-Krah, A.N. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 2
1992 · Ezenwa, I.V., Atta-Krah, A.N. · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · 2