Maintenance and improvement of soil productivity in the highlands of Ethiopia, Kenya, Madagascar, and Uganda : an inventory of spatial a nd non-spatial survey and research data on natural resources and land p roductivity - Braun, Arnoud R.; African Highlands Initiative (Nairobi, Kenya : African Highlands Initiative, 1997)
"June 1997"--T.p. verso.
Includes bibliographical references (p. 102-119).
Keywords: Soil productivity