00328nam a2200121Ia 4500008004100000041000800041082001200049100001400061245004500075260004900120300003200169365000500201240624s9999    xx            000 0 und d  aeng  a658 CRO  aCROSS ROB  aHIDDEN POWER OF SOCIAL NETWORKS UNDERSTA  c2003aBostonbHarvard Businesss School Press  axiii, : 213 : p. : cm. ; 24  c