Helldén, Ulf
An assessment of woody biomass, community forests, land use and soil erosion end Ethiopia. / Ulf Helldén - Lund : Lund University Press , 1987 - 75 p. : il.
9179660169
USO DE LA TIERRA
EROSION DE SUELOS
BIOMASA
SUELOS DE ETHIOPIA
526 / H477a
An assessment of woody biomass, community forests, land use and soil erosion end Ethiopia. / Ulf Helldén - Lund : Lund University Press , 1987 - 75 p. : il.
9179660169
USO DE LA TIERRA
EROSION DE SUELOS
BIOMASA
SUELOS DE ETHIOPIA
526 / H477a