000 00298nam a2200121Ia 4500
008 130521s9999 xx 000 0 und d
020 _a9.78E+12
100 _a"Christakis, Nicholas A."
245 _aConnected :
260 _aNew York :
650 _aSOCIAL NETWORKS
700 _a"Fowler, James H."
999 _c14387
_d14387