HBR <br/><br/>
Keeping customers 

 - USA  Harvard business school  1993 
 - 384p p. 
<br/><br/><label>ISBN: </label>9780875843339 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CRM
<br/><br/><label>Dewey Class. No.: </label>658.812  HBR