00286nam a2200097Ia 4500008004100000041000800041100001700049245005300066260006100119300000800180240521s2005    xx            000 0 und d  aeng  aCHOPRA A. K.  aEARTHQUAKE DYNAMIC OF STRUCTURES II ED A PRIMER.  bNATIONAL INFORMATION CENTRE OF EARTHQUAKE ENGINEERc2005  a320