00267nam a2200097Ia 4500008004100000082002300041100001700064245005100081260002900132300000800161140113s9999    xx            000 0 und d  a631.43(047.3)   K6  a"Slager, S."  aMorphological studies of some cultivated soils  a1966bCAP &DcWageningen  a111