00292nam a2200121Ia 4500008004100000082001400041100001900055245002500074260002700099260002700126260000900153300000800162160427s9999    xx            000 0 und d  a005.4 DON  aDonovan, J. J.  aSystems programming   aLondon, McGrow - Hill   bLondon, McGrow - Hill   c1972  a488