00413nam a2200145Ia 4500008004100000020001800041041000800059082001700067100001400084245010300098250000600201260003900207300001300246650000800259210716s2013 xx 000 0 und d a9788132113409 aeng a658.812 KUMV aKumar, V. aProfitable customer engagement: concepts metrics and strategies.bConcepts metrics and strategies. a1 aNew DelhibSage Publicationsc2013 axxii,311 aCRM