00349nam a2200133Ia 4500008004100000041000800041082001600049100001700065245004500082250000700127260003900134300003300173365000900206240624s9999    xx            000 0 und d  aeng  a658.802 POW  aPOWELL GUY R  aROI OF SOCIAL MEDIA HOW TO IMPROVE THE R  a11  c2011aSingaporebJohn Wiley & Sons  axviii, : 289 : p. : cm. ; 23  cb27