00299nam a2200109Ia 4500008004100000041000800041082001600049100003500065245004400100260002600144300001900170241015s9999    xx            000 0 und d  aeng  a381.142 REE  aReeves, Martin / Pidun, Ulrich  aBusiness Ecosystems Business Ecosystems  bDe GruyteraUSAc2022  a280;. P. 22 cm