00286nam a2200133Ia 45000030006000000050017000060080041000230400009000640410012000730820017000851000018001022450023001202600009001430Nust20170105110248.0161124s9999    xx            000 0 und d  cIGIS  aEnglish  a910.022bSTR  aStrahler Alan  aPhysical Geography  c2002