00409nam a2200133Ia 4500008004100000020001800041041000800059082001700067100001500084245002200099260001200121952012500133999001700258211209s9999    xx            000 0 und d  a9789332550131  aeng  a300.2851 VAL  aVALKENBURG  aNETWORK ANALYSIS   bPEARSON  00104070aRITbRITcIS-U2d2021-12-31g429.00l2o300.2851 VALp78644r2022-05-24 00:00:00s2022-04-29w2021-12-31yBK  c78644d78644