Manual
Barrios, E.
Barrios, Edmundo; Bekunda, M.A.; Delve, Robert J.; Esilaba, Anthony O.; Mowo, Jeremiah; Zapata Sánchez, Vicente. 2000. Identifying and classifying local indicators of soil quality : Methodologies for decision making in natural resource management: Eastern Africa version. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. v.