00344nam a2200145Ia 45000010005000000080041000050200018000460400013000640820016000771000021000932450057001142600009001713000011001805460007001918243140324s9999    xx            000 0 und d  a0-07-065086-1  cPK-LaUMT  a 004bTOW-C  aTowner, Larry E.  aCase : Concepts and implementationcTowner, Larry E.  c1989  a232 p.  aEN