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Ítem Maize/Annual forage legumes mixed cropping systems: Characterizing water and nitrogen dynamics in maize/vetch pure and mixed stands. 1. Procedures for collecting minimum data sets(International Livestock Centre for Africa) Saka, A.R.; Haque, I.; Singh, U.; Thornton, Philip K.Ítem Contribution en azote de quatre legumineuses a la culture de maisHaque, I.; Jutzi, S.C.Ítem Nitrogen fixation by annual forage legumes and its contribution to succeeding wheat in the Ethiopian highlands(Informa UK Limited) Haque, I.; Lupwayi, N.Z.Ítem Characteristics of upland soils at ILCA research sites in Ethiopia(International Livestock Centre for Africa) Kamara, C.S.; Haque, I.Ítem Phosphorus response and mineral composition of Ethiopian highland Trifolium (clover) species(Informa UK Limited) Nnadi, L.A.; Haque, I.; Mugwira, L.M.Ítem Faidherbia albida and its effects on Ethiopian highland Vertisols(Springer) Kamara, C.S.; Haque, I.Ítem Soil physics manual(International Livestock Centre for Africa) Kamara, C.S.; Haque, I.Ítem Soil science & plant nutrition annual reports: 1983-1990 and projects protocols: 1991-1993(International Livestock Centre for Africa) Haque, I.; Amare, T.Ítem Potassium status of some Ethiopian soilsMamo, T.; Haque, I.Ítem Soil Science and Plant Nutrition Section. Objectives, history, achievements and current program(International Livestock Centre for Africa) Haque, I.; Amare, T.