00475nam a2200145Ia 4500008004100000082001700041100004500058245002300103260002000126300001400146490009200160600001600252600001800268650004300286140224s9999    xx            000 0 und d  a631.674.1 L6  aFood and Agriculture Organization (Rome)  aSurface irrigation  aRomebFAOc1974  axiv,160p.  aFAO Agricultural Development Paper; no.95. FAO hand and water Development Series; no.3.  a L.J.Booher  aBooher,  L.J.  aIrrigation-research,Surface irrigation