00303nam a22001097a 4500082001300000100001500013245009400028250001200122260002900134300001000163654002000173  a617bDAS  aDas, Somen  aA manual on clinical surgery: including special investigations and differential diagnosis  a6th Ed.  aCalcuttabDr.S.Dasc2004  a478p.  aGeneral Surgery