Reihe Springer Texts in Business and EconomicsV. Kumar ×Bücher × Customer Relationship ManagementConcept, Strategy, and ToolsV. KumarSpringer BerlinSoftcover2019 Customer Relationship ManagementConcept, Strategy, and ToolsV. KumarSpringer BerlinHardcover2018 Customer Relationship ManagementConcept, Strategy, and ToolsV. KumarSpringer BerlinHardcover2012