"agriculture eau - approvisionnement." . . "Bacini idrografici." . . "Sols Conservation." . . "eau - conservation sol - conservation." . . "Food and Agriculture Organization of the United Nations." . . "Organisation de l'alimentation et de l'agriculture des Nations Unies." . . "Eau Conservation." . . "Bodembescherming." . . . . "Bassins hydrographiques Gestion." . . . . . . "Agro-ecological zones and their influence on present and potential land use; Surveys and assessment; Socio-economic enquiry; Land evaluation and land-use suitability; Crop groups and soil conservation requirements in agro-ecological zones; Soil and water conservation; Additional components in watershed development; Planning comprehensive watershed management and economic evaluation; Organization management and institutional structure; Data forms; Example of complete study for annual crop forms 1.1 to 1.8; Example of unit costs of inputs and outputs used in development plan; Example of composition and costing of heavy equipment; Definitions and explanations to economic evaluation." . . . . . . . "Watershed development : with special reference to soil and water conservation" . "Watershed development" . . "Watershed development with special reference to soil and water conservation" . "Watershed development with special reference to soil and water conservation"@en . . "Watershed development : With special reference to soil and water conservation" . . . . . . . . . . . . . . . . . . . . . . . . "Watershed development with special reference to soil and water conservationi"@en . "Waterreservoirs." . .