[1]
N. Österle, A. Angassa, A. Tadesse, A. Ebro, J. Sauerborn, and A. Treydte, “Crop-Livestock Farming Systems Varying with Different Altitudes in Southern Ethiopia”, Sci. Technol. Arts Res. J., vol. 1, no. 4, pp. 01–13, Dec. 2013.