00286nam a2200097Ia 4500008004100000082001900041100001900060245006400079260003700143300000800180140113s9999    xx            000 0 und d  a631.43:53   K9  a"Childs, E.C."  aIntroduction to the physical basis of soil water phenomena.  a1969bWiley IntersceincecLondon  a493