00279nam a2200109Ia 4500008004100000041000800041082001400049100001800063245003400081260004300115300001100158231228s1989    xx            000 0 und d  aeng  a5.74bHAN  aHANSON (Owen)  aDesign of Computer Data files  aNew DelhibSigma Press New Delhic1989  ax, 358