00427nam a2200169Ia 4500008004100000041000800041082001600049100001800065245003200083250000600115260005100121300000800172365001100180650002900191650002000220700001700240140306s9999    xx            000 0 und d  aeng  a658bGOR/EL  aGore, Marvine  aElements of system analysis  a3  aNew DelhibGalgotia Publications Pvt Ltdc1979  a544  bRs.165  aComputer oriented system  aData management  aStubbe, John