Forst in Paktia, Afghanistan
1972
Soil conservation
Soil and water conservation in Sub-Saharan Africa : towards sustainable production by the rural poor
1992
Vanishing land and water : soil and water conservation in dry lands
1988
Chleq, Jean-Louis |
Dupriez, Hugues |
Scientific basis for soil protection in the european community
1987
Barth, H. |
L'Hermite, P. |
Soil depletion and degradation control in the tropics
1982
Denisoff, I. A. |
Zonn, S. V. |
Desertification and development : dryland ecology in social perspective
1982
Spooner, Brian |
Mann, H. S. |
From soil conservation to land husbandry : guidelines based on SIDA's experience
1993
Lundgren, Lill |
Taylor, Geoff |