00365nam a2200145Ia 4500008004100000020001800041041000800059082001300067100003600080245002900116250000600145260003800151300001600189650001400205210716s2013    xx            000 0 und d  a9788131520734  aeng  a330 MELM  aMelvin, Michael;Boyes, William.  aPrinciples of economics.  a9  aNew DelhibCengage Learningc2013  axxxviii,853  aEconomics