Report of the fourth session of the subcommission on land and water use of the European commission on agriculture - Tel-Aviv, Israel, 26 Apr - 9 May 1961.

agricultural development classification des sols eau souterraine economia economics economie encuestas europa europe exploitation agricole explotaciones agrarias farms groundwater irrigation land consolidation land use planification planning pollution de l'eau reconocimiento de suelos remembrement riego soil classification soil surveys surveys uso del agua utilisation de l'eau utilisation des terres water pollution water rights water use watershed management