00285nam a2200121Ia 4500008004100000082001800041100001900059245002500078250000800103260003000111300001000141650001200151150201s1994    xx            000 0 und d  a617.5bE1994S  aSABISTON,DAVID  aESSENTIAL OF SURGERY  a2ND  bW.B.SAUNDERSaDELHIc1994  a1-770  aSURGERY