00381nam a2200157Ia 4500008004100000020001500041041000800056041000800064082001600072100002000088245002700108260004700135300000800182365001500190700001800205140306s9999    xx            000 0 und d  a0673460207  aeng  amal  a330bRUF/PR  aGregory, Paul R  aPrincipes of economics  aLondonbSccott, Freshman and companyc1990  a125  bUsd. 52.25  aRuffin, Roy J