Home Publications & Data Poster Crop soil simulation modeling author(s) Sommer, Rolf published in2016 regions Ethiopia original file download full citation Sommer, Rolf; Kihara, Job; Gurmessa, Biyensa; Tamene, Lulseged. (2016). Crop soil simulation modeling. International Center for Tropical Agriculture (CIAT). Cali. CO. 1p.